Chapter 11 Properties Of The Hair And Scalp

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1. The middle layer of the hair is the:

Explanation

The correct answer is cortex. The cortex is the middle layer of the hair shaft, located between the outer cuticle and the inner medulla. It is responsible for giving the hair its strength, elasticity, and color. The cortex contains keratin, which is a protein that provides structure and support to the hair. Additionally, the cortex also contains pigment cells that determine the hair's color.

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Chapter 11 Properties Of The Hair And Scalp - Quiz

Are you looking to get information on hair or hairstyles? If yes, take this quiz chapter 11 properties of the hair and scalp test and answer the questions.... see moreThe quiz has very informative facts, trivia, and practical knowledge questions regarding your hair. The quiz gives you scientific information on hair type and how to make your hair look better. If you like the quiz, share it with your friends and family. All the best!
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2. The oil glands in the skin that are connected to the hair follicles are the _______________ glands.

Explanation

The correct answer is sebaceous. The oil glands in the skin that are connected to the hair follicles are called sebaceous glands. These glands produce sebum, an oily substance that helps to moisturize and protect the skin and hair.

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3. Hair follicles are not found on the:

Explanation

Hair follicles are not found on the soles of the feet because the skin on the soles is thick and does not have hair follicles. Hair follicles are responsible for producing and growing hair, but the skin on the soles of the feet is adapted for bearing weight and walking, so it does not have hair follicles.

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4. The _______________ is the innermost layer of the hair.

Explanation

The medulla is the innermost layer of the hair. It is a soft, spongy, and flexible layer that runs through the center of the hair shaft. The medulla is not always present in every hair strand, and its presence or absence can vary depending on the individual and the type of hair. It plays a role in the overall strength and elasticity of the hair.

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5. To help minimize tangles in extremely curly hair when washing, you should use:

Explanation

To help minimize tangles in extremely curly hair when washing, using a detangling rinse is the best option. Detangling rinses are specifically formulated to soften and smooth the hair, making it easier to comb through and reducing the risk of tangles. Drying shampoos may strip the hair of its natural oils, leading to further tangling, while strong scalp manipulations can cause breakage and damage to the hair. Using soap instead of shampoo may not provide the necessary conditioning properties to prevent tangles.

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6. Hair texture is classified as:

Explanation

Hair texture is classified as coarse, medium, or fine based on the diameter of the individual hair strands. Coarse hair has a larger diameter and feels thicker and more robust, while fine hair has a smaller diameter and feels thinner and more delicate. Medium hair falls in between coarse and fine hair in terms of thickness. This classification helps in determining the appropriate hair care products and styling techniques for different hair types.

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7. The scientific study of hair, its diseases, and care is called:

Explanation

Trichology is the correct answer because it specifically refers to the scientific study of hair, its diseases, and care. Dermatology is the study of skin, biology is the study of living organisms in general, and cosmetology is the study of beauty treatments and cosmetics. Therefore, trichology is the most appropriate term for the study of hair.

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8. A oily substance secreted from the sebaceous glands is:

Explanation

Sebum is the oily substance secreted from the sebaceous glands. These glands are found in the skin and their main function is to produce sebum, which helps to lubricate and waterproof the skin and hair. Sebum also helps to protect the skin from drying out and provides a natural barrier against bacteria and other pathogens. Sweat, lymph, and catagen are not substances secreted from the sebaceous glands, making sebum the correct answer.

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9. The five main elements that make up the chemical composition of human hair are carbon, oxygen, hydrogen, and :

Explanation

Human hair is primarily made up of a protein called keratin, which contains the elements carbon, oxygen, hydrogen, nitrogen, and sulfur. Therefore, the correct answer is nitrogen and sulfur.

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10. The ability of the hair to absorb moisture is called:

Explanation

Hair porosity refers to the ability of the hair to absorb and retain moisture. It is determined by the condition of the hair cuticle, which can be either tightly closed, normal, or raised. Hair with low porosity has a tightly closed cuticle, making it difficult for moisture to penetrate. Hair with high porosity has a raised cuticle, allowing moisture to easily enter and escape. Understanding hair porosity helps in choosing the right hair care products and treatments to maintain optimal moisture balance and prevent damage.

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11. The technical term used to describe gray hair is:

Explanation

Canities is the correct technical term used to describe gray hair. It refers to the natural graying of hair due to the loss of pigment melanin. This term is commonly used in medical and scientific contexts to describe the phenomenon of hair turning gray or white with age. Tinea refers to a fungal infection of the skin, alopecia refers to hair loss, and albino describes a person or animal with a congenital absence of pigment, resulting in white hair, skin, and eyes.

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12. Shaving, clipping, and cutting the hair on the head:

Explanation

Shaving, clipping, and cutting the hair on the head do not affect the rate or pattern of hair growth. The idea that hair grows back faster, darker, or coarser after being cut is a common misconception. Hair growth is determined by factors such as genetics, hormones, and overall health, not by external factors like cutting or shaving. Therefore, these actions have no effect on hair growth.

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13. Asians tend to have:

Explanation

Asians tend to have extremely straight hair. This is a common characteristic among many Asians, as their hair typically lacks natural curl or wave. This straight hair texture is often attributed to genetic factors and is a distinguishing feature of Asian hair types.

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14. A highly contagious skin disease caused by a parasite called a mite that burrows under the skin is:

Explanation

Scabies is a highly contagious skin disease caused by a mite that burrows under the skin. The mite, known as Sarcoptes scabiei, causes intense itching and a rash that is typically worse at night. It is transmitted through close personal contact or by sharing contaminated items such as clothing or bedding. Scabies can affect people of all ages and is commonly found in crowded living conditions such as nursing homes or prisons. Treatment usually involves topical medications to kill the mites and relieve symptoms.

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15. A _______________ bond is a physical bond easily broken by water or heat.

Explanation

A hydrogen bond is a physical bond easily broken by water or heat. Hydrogen bonds occur when a hydrogen atom is attracted to an electronegative atom, such as oxygen or nitrogen. These bonds are relatively weak and can be disrupted by the presence of water or by an increase in temperature.

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16. The chemical bonds that hold together the amino acid molecules are called:

Explanation

Peptide bonds are the correct answer because they are the chemical bonds that link amino acids together in a protein chain. These bonds form through a condensation reaction, where the carboxyl group of one amino acid reacts with the amino group of another, resulting in the formation of a peptide bond and the release of a water molecule. Peptide bonds are crucial for the structure and function of proteins, as they determine the specific sequence and shape of the protein chain.

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17. Dandruff can easily be mistaken for:

Explanation

Dandruff can easily be mistaken for dry scalp because both conditions result in flakes of dead skin on the scalp. However, there are some differences between the two. Dandruff is usually accompanied by itching and can be caused by an overgrowth of a yeast-like fungus on the scalp. On the other hand, dry scalp is caused by a lack of moisture and oil on the scalp, leading to dryness and flaking. While both conditions may appear similar, the underlying causes and treatments differ.

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18. Tinea is characterized by:

Explanation

Tinea is a fungal infection of the skin, commonly known as ringworm. It is characterized by itching, redness, and a circular rash. Numbness and blisters are not typical symptoms of tinea. Sudden hair loss may occur if the infection affects the scalp, but it is not a defining characteristic. Therefore, the correct answer is itching, as it is a common symptom experienced by individuals with tinea.

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19. Fine hair is _____________ than coarse or medium hair.

Explanation

Fine hair is more fragile than coarse or medium hair. This means that it is more prone to breakage and damage. Fine hair strands are thinner and have less density, making them more delicate and easier to break. They require gentle handling and special care to prevent damage from styling, heat, and chemical treatments.

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20. Which type of hair almost never has a medulla?

Explanation

Vellus hair is a type of hair that is very fine and short, commonly found on the body of children and women. It is often referred to as "peach fuzz" and does not have a medulla, which is the innermost layer of the hair shaft. The absence of a medulla in vellus hair is due to its thin and delicate nature. This distinguishes vellus hair from other types of hair, such as oily, pigmented, and dark hair, which typically have a medulla.

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21. The medical term for dandruff is:

Explanation

The correct answer for the medical term for dandruff is "pityriasis." Pityriasis is a common skin condition characterized by the excessive shedding of dead skin cells from the scalp, resulting in white or gray flakes. It is often accompanied by itching and can be caused by various factors such as dry skin, fungal infections, or certain skin conditions. Canities refers to the graying of hair, alopecia is the medical term for hair loss, and simplex refers to a condition that is uncomplicated or not involving other factors.

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22. Oily scalp and hair can be treated by properly washing it:

Explanation

Normalizing shampoo is specifically designed to treat oily scalp and hair. It helps to balance the scalp's natural oil production and remove excess oil and buildup. By using a normalizing shampoo, it can effectively cleanse the scalp and hair, leaving them feeling clean and refreshed.

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23. The infestation of hair and scalp with head lice is called:

Explanation

The correct answer is pediculosis capitis. Pediculosis capitis refers to the infestation of hair and scalp with head lice. Hyperttichosis is a condition characterized by excessive hair growth. Trichoptilosis is the splitting or fraying of hair ends. Fragilitas cranium is not a recognized term related to head lice infestation.

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24. The measurement of individual hair strands on 1 square inch (2.5 square centimeters) of the scalp is:

Explanation

Hair density refers to the number of individual hair strands on a given area of the scalp. It is measured by counting the number of hairs in a specific square inch or centimeter of the scalp. This measurement helps determine how thick or thin a person's hair is.

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25. Dandruff is believed to be caused by a:

Explanation

Dandruff is caused by a fungus. Fungal infections on the scalp can lead to the shedding of dead skin cells, which appear as dandruff. This fungus, known as Malassezia, is naturally present on the scalp but can multiply excessively, leading to dandruff. It feeds on the natural oils produced by the scalp, causing irritation and flaking. Antifungal treatments, such as medicated shampoos, are often used to control dandruff by reducing the overgrowth of this fungus.

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26. A tuft of hair that strands straight up is a:

Explanation

A cowlick is a tuft of hair that stands straight up, often in a different direction from the rest of the hair. This occurs due to the natural growth pattern of the hair follicles, causing the hair in that area to resist lying flat. Cowlicks are commonly found on the crown of the head and can be difficult to style or control.

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27. Coarse hair:

Explanation

Coarse hair is stronger than fine hair because it has a larger diameter and more protein content. The larger diameter of coarse hair provides more structural support, making it less prone to breakage. Additionally, coarse hair typically has a higher density of cuticle layers, which adds to its strength. Fine hair, on the other hand, has a smaller diameter and fewer cuticle layers, making it more fragile and susceptible to damage. Therefore, coarse hair is stronger than fine hair.

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28. The _____________ phase signals the end of the growth phase.

Explanation

The catagen phase signals the end of the growth phase. During this phase, the hair follicle stops producing new cells and the hair stops growing. It is a transitional phase between the active growth phase (anagen) and the resting phase (telogen).

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29. Scalp message __________________ hair growth.

Explanation

A scalp massage does not affect hair growth. While a scalp massage can improve blood circulation and promote relaxation, it does not directly impact the growth of hair follicles. Hair growth is primarily determined by factors such as genetics, hormones, and overall health. Therefore, a scalp massage may feel good and have other benefits, but it does not have a direct effect on hair growth.

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30. Finasteride ia an oral prescription medication for hair loss that meant for:

Explanation

Finasteride is an oral prescription medication specifically designed for men. It is used to treat male pattern baldness, a condition that affects men and causes hair loss. The medication works by inhibiting the conversion of testosterone to dihydrotestosterone (DHT), which is the hormone responsible for hair loss in men. Since women do not typically experience male pattern baldness, finasteride is not recommended for them. Therefore, the correct answer is "men only".

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31. The ______________ is the outermost layer of hair.

Explanation

The hair cuticle is the outermost layer of hair. It acts as a protective covering for the inner layers of the hair shaft. It consists of overlapping scales that help to protect the hair from damage and keep it hydrated. The cuticle also plays a role in determining the texture and appearance of the hair.

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32. Scalp hair grows ______________ on women than on men.

Explanation

Women generally have faster hair growth compared to men. This is due to hormonal differences between the sexes. Women tend to have higher levels of estrogen, which promotes hair growth, while men have higher levels of testosterone, which can slow down hair growth. Additionally, women's hair follicles may be more active and have a shorter resting phase, leading to faster growth. Therefore, the correct answer is "faster".

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33. Bald men are commonly perceived as:

Explanation

Bald men are commonly perceived as less successful. This perception may stem from societal stereotypes and biases that associate baldness with aging and a decline in physical attractiveness. These stereotypes can lead to assumptions that bald men are less successful in their careers or personal lives, despite there being no actual correlation between baldness and success. It is important to recognize and challenge these stereotypes to prevent unfair judgments based on appearance.

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34. Which type of melanin provides natural colors ranging from red and ginger to yellow and blond tones?

Explanation

Pheomelanin is the type of melanin that provides natural colors ranging from red and ginger to yellow and blond tones. Eumelanin is responsible for darker hair colors, while polymelanin and biomelanin are not involved in determining hair color.

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35. The growth phase during which new hair is produced is:

Explanation

During the anagen phase, new hair is produced. This is the active growth phase of the hair follicle, where cells divide rapidly and hair grows at a rate of about half an inch per month. This phase can last for several years, and it is during this phase that the hair shaft is formed and pushed up through the scalp.

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36. Wet hair with normal elasticity will stretch up to ______________ of its original length.

Explanation

Wet hair with normal elasticity will stretch up to 50 percent of its original length. This means that when wet, the hair can be stretched to half of its original length without breaking or losing its shape. This is an important characteristic of healthy hair, as it indicates that it can withstand some tension and manipulation without being damaged.

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37. The ________________ is a tiny, involuntary muscle in the base of the hair follicle.

Explanation

The arrector pili is a tiny, involuntary muscle located at the base of the hair follicle. This muscle is responsible for causing the hair to stand up straight, resulting in the phenomenon commonly known as "goosebumps." When the arrector pili muscle contracts, it pulls on the hair follicle, causing the hair to become more erect. This response is often triggered by cold temperatures or strong emotions, such as fear or excitement.

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38. Hair is approximately __________________ percent protein.

Explanation

Hair is made up of a protein called keratin, which accounts for its strength and structure. Therefore, it can be concluded that hair is approximately 90 percent protein.

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39. Hair that forms in a circular pattern on the crown of the head is called:

Explanation

A whorl is a term used to describe hair that forms in a circular pattern on the crown of the head. It is characterized by a specific direction of hair growth that creates a circular or spiral shape. This term is commonly used in the field of hairstyling and hair analysis to identify and classify different hair patterns. The other options, crown hair, cowlick, and ringed hair, do not accurately describe this specific circular pattern of hair growth on the crown of the head.

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40. The medulla is composed of ________________ cells.

Explanation

The medulla is composed of round cells.

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41. Vellus hair is also knows:

Explanation

Vellus hair is also known as lanugo hair. Lanugo hair refers to the fine, soft, and unpigmented hair that covers the body of a fetus or newborn baby. It is usually shed and replaced by terminal hair, which is thicker and more pigmented, as the baby grows. This type of hair is different from other types mentioned in the question, such as lanthionine hair, malassezia hair, and monilethrix hair, which are not related to vellus hair.

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42. Cross-sections of hair:

Explanation

Cross-sections of hair can be almost any shape because hair can vary in texture and thickness from person to person. The shape of the cross-section is determined by the shape of the hair follicle, which can be round, oval, or flattened. This variation in shape is what gives individuals their unique hair types, such as straight, wavy, or curly. Therefore, it is incorrect to say that cross-sections of hair are always round, oval, or flattened, as they can be almost any shape.

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43. Congenital canities manifests:

Explanation

Congenital canities refers to the premature graying of hair that occurs at or before birth. This condition is rare and occurs due to a lack of pigment-producing cells in the hair follicles. Unlike regular graying of hair that happens with age, congenital canities is present from birth or develops during infancy. The premature graying is usually uniform and affects all the hair on the body.

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44. The naturally occurring fungus that causes the symptoms of dandruff when it grows out of control is:

Explanation

Malassezia is the correct answer because it is a naturally occurring fungus that can cause dandruff when it overgrows on the scalp. This fungus is commonly found on the skin of humans, but when it multiplies excessively, it can lead to the flaking and itching associated with dandruff. Controlling the growth of Malassezia is important in managing dandruff symptoms.

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45. The average growth of healthy scalp hair is:

Explanation

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46. A condition of abnormal hair growth on areas of the body is:

Explanation

Hypertrichosis is the correct answer because it refers to a condition of abnormal hair growth on areas of the body. This condition causes excessive hair growth beyond what is considered normal for a person's age, sex, and ethnic background. Hypertrichosis can occur in specific areas or can be generalized, affecting the entire body. It can be caused by various factors, including genetics, hormonal imbalances, medications, and certain medical conditions.

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47. Salt bonds account for about _______________ of the hair's overall strength.

Explanation

Salt bonds account for about one-third of the hair's overall strength. These bonds are formed between the positive and negative charges of amino acids in the hair protein structure. They contribute to the hair's strength and stability, but they are not as strong as other types of bonds like disulfide bonds. Therefore, one-third is the correct answer as it indicates the approximate proportion of the hair's overall strength that can be attributed to salt bonds.

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48. The anagen phase generally lasts from three to five:

Explanation

The anagen phase refers to the active growth phase of hair follicles. During this phase, the hair cells divide rapidly, resulting in the growth of new hair. The anagen phase can vary in duration depending on various factors, such as genetics and overall health. While it typically lasts for a few years, it can range from three to five years in most individuals.

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49. The term for the spiral shape of a coiled protein is:

Explanation

The term for the spiral shape of a coiled protein is helix. A helix is a three-dimensional structure formed by a chain of amino acids that twist around a central axis. This structure is stabilized by hydrogen bonds between the amino acids. The helix shape is an important characteristic of proteins and plays a crucial role in their function and stability.

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50. For chemicals tp penetrate a healthy cuticle hair layer, they must have:

Explanation

Chemicals need to have an alkaline pH in order to penetrate a healthy cuticle hair layer. The cuticle is the outermost layer of the hair and is made up of overlapping scales. These scales lay flat when the hair has a neutral pH, but when the pH becomes alkaline, the scales lift, allowing chemicals to enter the hair shaft. This is why alkaline solutions, such as hair relaxers or color treatments, are used to penetrate and alter the structure of the hair.

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51. Compared to hair with high porosity, chemical services performed on hair with low porosity require:

Explanation

Hair with low porosity has tightly closed cuticles, making it difficult for chemicals to penetrate the hair shaft. To effectively perform chemical services on such hair, more alkaline solutions are required. Alkaline solutions help to raise the hair's pH level and open up the cuticles, allowing the chemicals to penetrate and work effectively. Acidic solutions would not be as effective in this case as they would further close the cuticles, preventing the chemicals from entering the hair shaft.

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52. The process whereby living cells mature and begin their journey up the hair shaft is:

Explanation

Keratinization is the correct answer because it refers to the process by which living cells in the hair follicles mature and transform into non-living cells filled with keratin, a protein that gives hair its strength and structure. During keratinization, these cells move up the hair shaft, gradually hardening and becoming keratinized. This process is essential for the growth and development of hair. Anagen, catagen, and osmosis are not directly related to the maturation and journey of cells up the hair shaft.

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53. A carbuncle is similar to a furuncle, but is:

Explanation

A carbuncle is a type of skin infection that is larger in size compared to a furuncle. It is characterized by a cluster of boils that are connected under the skin. The infection is usually deeper and more severe, causing more pain and discomfort. Unlike a furuncle, which is a single boil, a carbuncle can be several centimeters in diameter and may require medical intervention such as drainage or antibiotics for treatment.

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54. The two parts of a mature strand of human hair are the:

Explanation

The correct answer is hair shaft and hair root. The hair shaft refers to the visible part of the hair that extends beyond the surface of the skin. It is composed of dead cells that have been pushed up from the hair follicle. The hair root, on the other hand, is the part of the hair that is located below the surface of the skin. It is embedded in the hair follicle and is responsible for producing new hair cells.

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55. The tube-like depression or pocket in the skin or scalp that contains the hair root is the:

Explanation

The correct answer is follicle. The follicle is a tube-like depression or pocket in the skin or scalp that contains the hair root. It provides nourishment to the hair and is responsible for hair growth. The shaft refers to the visible part of the hair above the skin surface. The bulb is the rounded base of the hair follicle where the hair root is formed. The scalp is the skin on the top of the head.

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56. The body can produce 11 of the 20 _____________ that make up hair.

Explanation

The body is capable of producing 11 out of the 20 amino acids that make up hair. Amino acids are the building blocks of proteins, and hair is primarily composed of a protein called keratin. The body can synthesize these amino acids through various metabolic pathways, while the remaining 9 essential amino acids must be obtained through diet. Therefore, the correct answer is amino acids.

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57. The longer, coarse, pigmented hair found on the scalp, legs, arms, and bodies of males and females is called ________________ .

Explanation

Terminal hair refers to the longer, coarse, and pigmented hair found on various parts of the body such as the scalp, legs, arms, and bodies of both males and females. This type of hair is different from vellus hair, which is shorter, finer, and less pigmented. Lanugo hair, on the other hand, refers to the fine, unpigmented hair that is present on a fetus or newborn baby. "Extra hair" is not a specific term used to describe any particular type of hair. Therefore, the correct answer is terminal hair.

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58. By age 35, almost ________________ percent of both men and women show some degree of hair lost. 

Explanation

By age 35, almost 40 percent of both men and women show some degree of hair loss. This suggests that hair loss is a common occurrence and affects a significant portion of the population by this age. It is important to note that hair loss can be caused by various factors such as genetics, hormonal changes, and certain medical conditions.

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59. Total scalp hair loss is now as:

Explanation

Alopecia totalis refers to the complete loss of hair on the scalp. This condition is characterized by the absence of any hair follicles and can result in a completely bald scalp. It is a more severe form of alopecia areata, which is a condition where hair loss occurs in patches. Androgenetic alopecia, on the other hand, is a common form of hair loss that is typically caused by genetic factors and hormonal imbalances. Alopecia universalis is a rare condition where there is complete loss of hair on the entire body, including the scalp.

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60. The technical term for knotted hair is:

Explanation

Trichorrhexis nodosa is the correct term for knotted hair. Trichorrhexis nodosa refers to a condition where the hair shaft becomes weak and breaks easily, resulting in the formation of knots or nodules in the hair. This condition can be caused by various factors such as excessive heat styling, chemical treatments, or certain medical conditions. Monilethrix, trichoptilosis, and hypertrichosis are all different hair conditions and do not specifically refer to knotted hair.

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61. The ________________ are part of the integumentary system.

Explanation

The integumentary system consists of various components that protect the body from external factors. Hair, skin, nails, and glands are all part of this system. Hair helps to regulate body temperature and protects the scalp. Skin acts as a barrier against pathogens and regulates body temperature. Nails provide protection to the fingertips and help with gripping objects. Glands, such as sweat glands and oil glands, secrete substances that help to moisturize and protect the skin. Therefore, all of these components are part of the integumentary system.

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62. Compared to pigmented hair, gray hair is:

Explanation

Gray hair is not coarser than pigmented hair because the texture of hair is determined by the size and shape of the hair follicle, not by the presence or absence of pigment. Similarly, gray hair is not more resistant than pigmented hair because resistance to damage or breakage is also not influenced by the presence or absence of pigment. Therefore, gray hair is neither coarser nor more resistant than pigmented hair.

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63. The _________________ is the lowest part of a hair strand.

Explanation

The hair bulb is the lowest part of a hair strand. It is located at the base of the hair follicle and is responsible for producing new cells that make up the hair strand. The hair bulb contains the hair matrix, which is a group of cells that divide and differentiate to form the different layers of the hair strand. It also contains the dermal papilla, which supplies nutrients to the hair follicle and helps in hair growth. Therefore, the hair bulb plays a crucial role in the growth and development of the hair strand.

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64. The medical term for ringworm is:

Explanation

Tinea is the correct medical term for ringworm. Ringworm is a common fungal infection that affects the skin, scalp, or nails. It is characterized by a red, circular rash that may be itchy or scaly. Tinea is the general term used to describe various types of fungal infections, including tinea barbae (ringworm of the beard), tinea favosa (ringworm with yellow, crusty patches), and tinea capitis (ringworm of the scalp). However, when referring to ringworm in general, the term tinea is used.

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65. The part of the hair located below the surface of the epidermis is the:

Explanation

The hair root is the correct answer because it is the part of the hair that is located below the surface of the epidermis. The hair root is embedded in the hair follicle and is responsible for anchoring the hair in the skin. It contains the hair bulb, which is the living part of the hair that produces new cells and contributes to hair growth. The hair shaft, on the other hand, refers to the visible part of the hair above the skin's surface. The hair stream and hair bulb are not accurate terms related to the location of the hair below the epidermis.

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66. Dry, sulfur-yellow, cup-like crusts on the scalp are called:

Explanation

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67. The most frequently encountered fungal infection resulting from hair services is:

Explanation

Tinea barbae is the most frequently encountered fungal infection resulting from hair services. This infection affects the hair follicles and the surrounding skin of the beard and mustache area. It is commonly caused by the fungus Trichophyton rubrum and can be transmitted through direct contact with an infected person or contaminated objects. Symptoms include redness, itching, and pustules or nodules in the affected area. Prompt treatment with antifungal medications is necessary to clear the infection and prevent its spread.

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68. The technical term for beaded hair is:

Explanation

Monilethrix is the correct technical term for beaded hair. Monilethrix is a rare genetic hair disorder characterized by the presence of beaded hair shafts, which appear as a series of nodes or constrictions along the hair strand. Fragilitas cranium refers to brittle hair, trichorrhexis nodosa is a condition characterized by weak points in the hair shaft leading to breakage, and hypertichosis refers to excessive hair growth. None of these terms specifically describe the beaded appearance of the hair seen in monilethrix.

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69. An autoimmune disorder that causes affected hair follicles to be mistakenly attacked by a person's own immune system is:

Explanation

Alopecia areata is an autoimmune disorder where the person's immune system mistakenly attacks their hair follicles. This leads to hair loss in small, round patches on the scalp or other areas of the body. Unlike androgenic alopecia, which is a genetic condition causing hair thinning and baldness, alopecia areata specifically targets the hair follicles. It can progress to alopecia totalis, where all the hair on the scalp is lost, or even to alopecia universalis, where hair loss occurs on the entire body.

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70. Hypertrichosis is also know as:

Explanation

Hypertrichosis is a medical condition characterized by excessive hair growth on the body. The term "hirsuties" is commonly used to refer to this condition. "Ringed hair" refers to a different condition called trichorrhexis nodosa, which causes hair to break easily. "Canities" refers to the graying of hair, while "split ends" refers to the splitting of hair shafts. Therefore, the correct answer is "hirsuties" as it accurately represents the condition of hypertrichosis.

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The middle layer of the hair is the:
The oil glands in the skin that are connected to the hair follicles...
Hair follicles are not found on the:
The _______________ is the innermost layer of the hair.
To help minimize tangles in extremely curly hair when washing, you...
Hair texture is classified as:
The scientific study of hair, its diseases, and care is called:
A oily substance secreted from the sebaceous glands is:
The five main elements that make up the chemical composition of human...
The ability of the hair to absorb moisture is called:
The technical term used to describe gray hair is:
Shaving, clipping, and cutting the hair on the head:
Asians tend to have:
A highly contagious skin disease caused by a parasite called a mite...
A _______________ bond is a physical bond easily broken by water or...
The chemical bonds that hold together the amino acid molecules are...
Dandruff can easily be mistaken for:
Tinea is characterized by:
Fine hair is _____________ than coarse or medium hair.
Which type of hair almost never has a medulla?
The medical term for dandruff is:
Oily scalp and hair can be treated by properly washing it:
The infestation of hair and scalp with head lice is called:
The measurement of individual hair strands on 1 square inch (2.5...
Dandruff is believed to be caused by a:
A tuft of hair that strands straight up is a:
Coarse hair:
The _____________ phase signals the end of the growth phase.
Scalp message __________________ hair growth.
Finasteride ia an oral prescription medication for hair loss that...
The ______________ is the outermost layer of hair.
Scalp hair grows ______________ on women than on men.
Bald men are commonly perceived as:
Which type of melanin provides natural colors ranging from red and...
The growth phase during which new hair is produced is:
Wet hair with normal elasticity will stretch up to ______________ of...
The ________________ is a tiny, involuntary muscle in the base of the...
Hair is approximately __________________ percent protein.
Hair that forms in a circular pattern on the crown of the head is...
The medulla is composed of ________________ cells.
Vellus hair is also knows:
Cross-sections of hair:
Congenital canities manifests:
The naturally occurring fungus that causes the symptoms of dandruff...
The average growth of healthy scalp hair is:
A condition of abnormal hair growth on areas of the body is:
Salt bonds account for about _______________ of the hair's overall...
The anagen phase generally lasts from three to five:
The term for the spiral shape of a coiled protein is:
For chemicals tp penetrate a healthy cuticle hair layer, they must...
Compared to hair with high porosity, chemical services performed on...
The process whereby living cells mature and begin their journey up the...
A carbuncle is similar to a furuncle, but is:
The two parts of a mature strand of human hair are the:
The tube-like depression or pocket in the skin or scalp that contains...
The body can produce 11 of the 20 _____________ that make up hair.
The longer, coarse, pigmented hair found on the scalp, legs, arms, and...
By age 35, almost ________________ percent of both men and women show...
Total scalp hair loss is now as:
The technical term for knotted hair is:
The ________________ are part of the integumentary system.
Compared to pigmented hair, gray hair is:
The _________________ is the lowest part of a hair strand.
The medical term for ringworm is:
The part of the hair located below the surface of the epidermis is...
Dry, sulfur-yellow, cup-like crusts on the scalp are called:
The most frequently encountered fungal infection resulting from hair...
The technical term for beaded hair is:
An autoimmune disorder that causes affected hair follicles to be...
Hypertrichosis is also know as:
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