Quiz On Human Skin

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  • 1/35 Questions

    Follicles are accessory organs of the skin.

    • True
    • False
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Skin Quizzes & Trivia
About This Quiz

This quiz titled 'Quiz on Human Skin' assesses knowledge on the skin's structure, functions, and its roles in human health. It covers topics like vitamin D production, protection against bacteria, and UV radiation shielding, making it relevant for learners studying biology or human anatomy.

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  • 2. 

    Skin is essential in the production of vitamin D.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Skin is essential in the production of vitamin D because when our skin is exposed to sunlight, it triggers a chemical reaction that converts a substance in our skin called 7-dehydrocholesterol into vitamin D3. This form of vitamin D is then further converted in the liver and kidneys into its active form, which is crucial for various functions in our body, including the absorption of calcium and phosphorus for maintaining healthy bones and teeth. Therefore, skin plays a vital role in the synthesis of vitamin D.

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  • 3. 

    At all times and conditions, skin will protect us against entry of bacteria.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because while skin acts as a barrier and protects us from many harmful substances, it is not completely impervious to bacteria. Bacteria can enter the body through cuts, wounds, or even through the pores of the skin. Additionally, some bacteria can produce enzymes or toxins that can break down the skin's protective barrier. Therefore, while skin does provide a level of protection, it is not foolproof against bacterial entry.

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  • 4. 

    Melanin is a protein that makes the epidermis waterproof and prevents entry of viruses.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Melanin is not a protein, but a pigment that gives color to the skin, hair, and eyes. It is produced by cells called melanocytes in the epidermis and helps protect the skin from the harmful effects of ultraviolet (UV) radiation. While melanin does provide some level of protection against UV radiation, it does not make the epidermis waterproof or prevent the entry of viruses. Other factors, such as the skin's natural oils and the presence of tight junctions between skin cells, contribute to the waterproofing of the epidermis.

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  • 5. 

    The subcutaneous layer of the skin contains mostly fat.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The subcutaneous layer of the skin is located beneath the dermis and is composed mostly of adipose tissue, which is a type of fat. This layer serves as insulation, providing cushioning and protection for the body. It also helps regulate body temperature by acting as a barrier to heat loss. Therefore, the statement that the subcutaneous layer of the skin contains mostly fat is correct.

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  • 6. 

    Which of these structures or substances in the skin helps prevent UV radiation from damaging deep structures of the skin?

    • Sebaceous glands

    • Melanin

    • Keratinocytes

    • Keratin

    Correct Answer
    A. Melanin
    Explanation
    Melanin is the correct answer because it is a pigment produced by melanocytes in the skin. It helps protect the skin from the harmful effects of UV radiation by absorbing and scattering the UV rays. This prevents the UV radiation from reaching the deeper layers of the skin, where it can cause damage to DNA and other structures. Melanin acts as a natural sunscreen, providing some level of protection against sunburn, skin aging, and the development of skin cancer.

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  • 7. 

    The ABCD rule applies to which of the following?

    • Melanoma

    • Basal cell carcinoma

    • Squamous cell carcinoma

    • Alopecia

    Correct Answer
    A. Melanoma
    Explanation
    The ABCD rule applies to melanoma. This rule is used to identify potential signs of melanoma, a type of skin cancer. The letters A, B, C, and D stand for asymmetry, border irregularity, color variation, and diameter. By examining these characteristics, healthcare professionals can evaluate whether a mole or skin lesion may be indicative of melanoma. The ABCD rule is an important tool in early detection and diagnosis of this serious form of skin cancer.

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  • 8. 

    When the skin is injured, inflammation follows.One effect of this response is that it

    • Prevents hemorrhage

    • Causes pain, calling attention to the injury

    • Decreases swelling

    • Decreases the blood supply to the injured area.

    Correct Answer
    A. Causes pain, calling attention to the injury
    Explanation
    When the skin is injured, inflammation occurs as a natural response of the body. One of the effects of this response is the sensation of pain, which serves as a signal to draw attention to the injury. This helps to alert the individual to take necessary actions for protection and healing.

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  • 9. 

    The extent of a burn injury is determined by

    • Calculating body mass

    • Calculations using weight, height, and age

    • Using the rule of nines

    • The substance that cause the burn

    Correct Answer
    A. Using the rule of nines
    Explanation
    The extent of a burn injury is determined by using the rule of nines. This method involves dividing the body into sections that represent 9% or multiples of 9% of the total body surface area (TBSA). By assessing the percentage of each section affected by the burn, healthcare professionals can estimate the overall extent of the injury. This allows for appropriate treatment planning and helps determine the severity of the burn.

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  • 10. 

    A person comes to your office with a red face, stating that the gas stove flashed in his face when he was lighting it. You note that facial hair has been burn. There are no blisters. Your best first response is to

    • Call 911 because burns to the head are always more serious than burns to other body parts

    • Sit the person down and apply ointment to the burn

    • Take vital sings and then put cool soaks on the burn

    • Get him to drink some cool water to prevent shock

    Correct Answer
    A. Call 911 because burns to the head are always more serious than burns to other body parts
    Explanation
    In this situation, the person has experienced a burn to the face from a gas stove. The fact that the person's facial hair has been burned indicates that the burn is likely superficial and does not involve deeper tissue damage. Additionally, the absence of blisters suggests that the burn is not severe. Therefore, the statement that burns to the head are always more serious than burns to other body parts is incorrect. It is important to assess the person's condition and provide appropriate first aid, but calling 911 may not be necessary unless there are signs of a more serious injury or the person is in significant distress.

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  • 11. 

    The skin plays a role in regulating body temperature by

    • Dilating or constricting blood vessels in the skin

    • Stimulating the hypothalamus

    • Eliminating wastes

    • Retaining fluids

    Correct Answer
    A. Dilating or constricting blood vessels in the skin
    Explanation
    The skin plays a role in regulating body temperature by dilating or constricting blood vessels in the skin. When the body is too hot, the blood vessels in the skin dilate, allowing more blood to flow near the surface of the skin and release heat. This helps to cool down the body. On the other hand, when the body is too cold, the blood vessels constrict, reducing blood flow to the skin and conserving heat. This mechanism helps to maintain a stable body temperature.

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  • 12. 

    Keratinocytes are located in the

    • Arrector pili

    • Epidermis

    • Dermis

    • Subcutaneous

    Correct Answer
    A. Epidermis
    Explanation
    Keratinocytes are specialized skin cells that produce the protein keratin. They are primarily found in the epidermis, the outermost layer of the skin. The epidermis is responsible for protecting the body from external factors such as UV radiation, pathogens, and dehydration. Keratinocytes play a crucial role in maintaining the integrity and strength of the skin by producing keratin, which forms a protective barrier. Therefore, the correct answer is epidermis.

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  • 13. 

    The ____ is the deeper of the two skin layers and is the more complex layer. It contains all the major tissue types, including epithelial tissue, connective tissue, muscle tissue, and nervous tissue.

    • Arrector pili

    • Epidermis

    • Dermis

    • Subcutaneous

    Correct Answer
    A. Dermis
    Explanation
    The dermis is the deeper of the two skin layers and is the more complex layer. It contains all the major tissue types, including epithelial tissue, connective tissue, muscle tissue, and nervous tissue. The dermis provides structural support to the skin and contains blood vessels, hair follicles, sweat glands, and sensory receptors. It is responsible for regulating body temperature, providing sensation, and protecting the body from external threats.

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  • 14. 

    Sweat glands are found in the

    • Epidermis

    • Dermis

    • Subcutaneous layer

    • Stratum basale

    Correct Answer
    A. Dermis
    Explanation
    Sweat glands are found in the dermis. The dermis is the layer of skin located beneath the epidermis. It contains various structures such as blood vessels, nerves, hair follicles, and sweat glands. Sweat glands are responsible for producing sweat, which helps regulate body temperature by cooling the skin through evaporation. Therefore, the dermis is the correct answer as it houses the sweat glands within its structure.

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  • 15. 

    When the supply of oxygen in the blood is low, the skin looks rather pale or 

    • Pink

    • Rosy

    • Yellow

    • Bluish

    Correct Answer
    A. Bluish
    Explanation
    When the supply of oxygen in the blood is low, a condition called cyanosis can occur, which causes the skin to appear bluish in color. This happens because the lack of oxygen causes the blood vessels near the skin surface to constrict, resulting in reduced blood flow and a bluish tint to the skin. This can be a sign of a serious medical condition and should be evaluated by a healthcare professional.

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  • 16. 

    A person with a rich supply of oxygenated blood will have that is a ____ hue

    • Pink

    • Cyanotic

    • Yellow

    • Bluish

    Correct Answer
    A. Pink
    Explanation
    A person with a rich supply of oxygenated blood will have a pink hue because oxygenated blood is bright red in color. When oxygen is delivered to the tissues, it gives the blood a pinkish appearance. This is a sign of good circulation and oxygenation in the body.

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  • 17. 

    The most deadly cancer is

    • Basal cell carcinoma

    • Squamous cell carcinoma

    • Melanoma

    • Eczema

    Correct Answer
    A. Melanoma
    Explanation
    Melanoma is the correct answer because it is the most deadly form of skin cancer. It develops in the melanocytes, which are the cells responsible for producing the pigment melanin. Melanoma can spread quickly to other parts of the body if not detected and treated early. It is more likely to spread to lymph nodes and internal organs, making it more difficult to treat. Basal cell carcinoma and squamous cell carcinoma are also types of skin cancer, but they are generally less aggressive and have a lower risk of spreading. Eczema is a skin condition, not a type of cancer.

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  • 18. 

    Which skin cancer rarely spreads to the other tissues?

    • Basal cell carcinoma

    • Squamous cell carcinoma

    • Melanoma

    • Eczema

    Correct Answer
    A. Basal cell carcinoma
    Explanation
    Basal cell carcinoma is the correct answer because it is a type of skin cancer that rarely spreads to other tissues. It is the most common type of skin cancer and typically grows slowly, often appearing as a small, shiny bump or a red patch on the skin. While it is locally invasive and can cause damage to surrounding tissues, it rarely metastasizes or spreads to other parts of the body. Early detection and treatment of basal cell carcinoma can lead to successful outcomes.

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  • 19. 

    A(n) ____ often begins with a mole

    • Wart

    • Basal cell carcinoma

    • Squamous cell carcinoma

    • Melanoma

    Correct Answer
    A. Melanoma
    Explanation
    Melanoma often begins with a mole. Melanoma is a type of skin cancer that develops from the pigment-producing cells known as melanocytes. It usually starts as an abnormal growth or change in an existing mole. This can include changes in size, shape, color, or texture. Early detection and treatment are crucial for improving the prognosis of melanoma.

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  • 20. 

    People with ____ may require chemotherapy.

    • Basal cell carcinoma

    • Squamous cell carcinoma

    • Melanoma

    • Eczema

    Correct Answer
    A. Melanoma
    Explanation
    Melanoma is a type of skin cancer that can spread to other parts of the body. It is a more aggressive form of skin cancer compared to basal cell carcinoma and squamous cell carcinoma. Chemotherapy is a common treatment option for melanoma, as it helps to kill cancer cells and prevent their spread. Therefore, people with melanoma may require chemotherapy as part of their treatment plan. Eczema, on the other hand, is a chronic skin condition and does not typically require chemotherapy.

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  • 21. 

    Herpes simplex is cause by

    • Something unknown

    • A virus

    • Bacteria

    • Lice

    Correct Answer
    A. A virus
    Explanation
    Herpes simplex is caused by a virus. This viral infection is caused by the herpes simplex virus (HSV) and can manifest as cold sores or genital herpes. The virus is highly contagious and can be transmitted through direct contact with the infected individual or through sexual contact. It is important to note that herpes simplex is not caused by bacteria or lice, but specifically by a virus.

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  • 22. 

    Rosacea results from dilation of small facial blood vessels; the cause of this dilation is ___.

    • Unknown

    • A virus

    • Bacteria

    • Fungi

    Correct Answer
    A. Unknown
    Explanation
    The correct answer is unknown. Rosacea is a chronic skin condition characterized by redness and visible blood vessels on the face. While the exact cause of the dilation of small facial blood vessels in rosacea is unknown, it is believed to involve a combination of genetic and environmental factors. Factors such as sun exposure, certain foods, alcohol, and stress can trigger or worsen symptoms. However, the underlying mechanism behind the dilation of blood vessels in rosacea is still not fully understood.

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  • 23. 

    Pediculosis is cause by ____ and comes in three form.

    • Something unknown

    • A virus

    • Bacteria

    • Lice

    Correct Answer
    A. Lice
    Explanation
    Pediculosis is caused by lice and comes in three forms. Lice are parasitic insects that infest the human body, particularly the scalp, causing itching and discomfort. There are three types of lice that can cause pediculosis: head lice, body lice, and pubic lice. Each type of lice infestation requires specific treatment and can be easily spread through close contact or sharing personal items. Therefore, lice are the correct answer for the cause of pediculosis.

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  • 24. 

    Cellulitis is an inflammation of connective tissues in the skin cause by

    • Something unknown

    • A virus

    • Bacteria

    • Lice

    Correct Answer
    A. Bacteria
    Explanation
    Cellulitis is an inflammation of connective tissues in the skin caused by bacteria. Bacteria can enter the skin through cuts, wounds, or insect bites, leading to an infection. The infection causes redness, swelling, warmth, and pain in the affected area. Prompt treatment with antibiotics is necessary to prevent the spread of the infection and potential complications.

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  • 25. 

    _____ is an inherited auto-immune disorder.

    • Folliculitis

    • Psoriasis

    • Scabies

    • Dermatitis

    Correct Answer
    A. Psoriasis
    Explanation
    Psoriasis is an inherited auto-immune disorder. It is characterized by the rapid buildup of skin cells, leading to red, itchy, and scaly patches on the skin. The immune system mistakenly attacks healthy skin cells, causing inflammation and the overproduction of skin cells. This condition is believed to have a genetic component, as it tends to run in families. Psoriasis can also be triggered by certain environmental factors, such as stress, infections, or injuries to the skin. Treatment options for psoriasis include topical creams, phototherapy, and systemic medications.

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  • 26. 

    _____ are mites that burrow beneath the skin.

    • Folliculitis

    • Psoriasis

    • Scabies

    • Dermatitis

    Correct Answer
    A. Scabies
    Explanation
    Scabies are mites that burrow beneath the skin, causing intense itching and a rash. They are highly contagious and can spread through close physical contact. Scabies mites burrow into the skin to lay their eggs, leading to the characteristic symptoms. Folliculitis is an inflammation of the hair follicles, Psoriasis is a chronic skin condition characterized by red, scaly patches, and Dermatitis refers to inflammation of the skin. Therefore, Scabies is the correct answer as it specifically refers to mites that burrow beneath the skin.

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  • 27. 

    With a ____, the muscle and bones may be burn and the tissue looks charred.

    • Superficial

    • Second degree

    • Full-thickness

    • Partial-thickness

    Correct Answer
    A. Full-thickness
    Explanation
    A full-thickness burn refers to a severe burn that affects not only the outer layer of skin (epidermis) but also the underlying layers, including the dermis and possibly even the subcutaneous tissue. In such burns, the muscle and bones may be burned, and the tissue appears charred. This type of burn is more serious and requires immediate medical attention and specialized treatment to prevent complications and promote healing.

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  • 28. 

    Apocrine  sweat glands are not associated with which of the following?

    • Produces sweat with a high amount of protein

    • Activated primarily by heat

    • Activated by nervousness or stress

    • Most numerous in arm pits and groin

    Correct Answer
    A. Activated primarily by heat
    Explanation
    Apocrine sweat glands are not primarily activated by heat. These glands are activated by nervousness or stress and produce sweat with a high amount of protein. They are most numerous in areas such as the armpits and groin.

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  • 29. 

    Which of these skin problems requires treating the whole family?

    • Folliculitis

    • Psoriasis

    • Scabies

    • Dermatitis

    Correct Answer
    A. Scabies
    Explanation
    Scabies is a highly contagious skin infestation caused by tiny mites that burrow into the skin and lay eggs. It easily spreads through close personal contact or sharing of personal items. Therefore, treating the whole family is necessary to prevent reinfection and to eliminate the mites completely. Folliculitis, psoriasis, and dermatitis are skin conditions that are not contagious and do not require treating the whole family.

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  • 30. 

    ___ has five stages.

    • Melanoma

    • Squamous cell carcinoma

    • Basal cell carcinoma

    • Eczema

    Correct Answer
    A. Melanoma
    Explanation
    Melanoma has five stages.

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  • 31. 

    The most common skin cancer is

    • Basal cell carcinoma

    • Squamous cell carcinoma

    • Melanoma

    • Eczema

    Correct Answer
    A. Basal cell carcinoma
    Explanation
    Basal cell carcinoma is the most common type of skin cancer. It arises from the basal cells in the lower part of the epidermis and typically appears as a small, shiny bump or a pinkish patch on the skin. It grows slowly and rarely spreads to other parts of the body. Risk factors for basal cell carcinoma include excessive sun exposure, fair skin, and a history of sunburns. Treatment options include surgical removal, topical medications, and radiation therapy. Regular skin examinations and sun protection measures are important for prevention and early detection of this type of skin cancer.

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  • 32. 

    Melanin, which traps ultraviolet radiation from sunlight and prevents the radiation from harming structures in the underlying layers of skin, is deposited throughout the layers of the

    • Epidermis

    • Dermis

    • Subcutaneous layer

    • Stratum basale

    Correct Answer
    A. Epidermis
    Explanation
    Melanin is a pigment that protects the skin from harmful UV radiation by absorbing it. It is deposited throughout the layers of the skin, including the epidermis, dermis, and subcutaneous layer. However, the highest concentration of melanin is found in the epidermis, specifically in the basal layer called the stratum basale. This layer is responsible for producing new skin cells and is closest to the surface. Therefore, the epidermis is the correct answer as it contains melanin and provides the primary protection against UV radiation.

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  • 33. 

    Which of the following is mostly adipose tissue?

    • Epidermis

    • Dermis

    • Subcutaneous

    • Stratum basale

    Correct Answer
    A. Subcutaneous
    Explanation
    Adipose tissue is a type of connective tissue that primarily consists of fat cells or adipocytes. It is responsible for storing energy in the form of fat, insulating and cushioning organs, and providing structural support. The subcutaneous layer, also known as the hypodermis, is predominantly composed of adipose tissue. It is located beneath the dermis and serves as a protective layer, helping to regulate body temperature and providing a reserve of energy. Therefore, the subcutaneous layer is mostly adipose tissue.

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  • 34. 

    A person comes into your clinic after being burned on parts of his right arm. Your best first response is to

    • Remove his shirt and apply ointment to the burned area.

    • Check his vital sings and observe for shock.

    • Apply a light coating of petroleum jelly to all the burn areas.

    • Call 911.

    Correct Answer
    A. Check his vital sings and observe for shock.
    Explanation
    The best first response in this situation is to check the person's vital signs and observe for shock. This is important because burns can cause a variety of complications, including shock, which can be life-threatening. Checking vital signs such as heart rate, blood pressure, and breathing can help determine the severity of the burn and whether immediate medical attention is needed. Observing for signs of shock, such as pale skin, rapid breathing, and weak pulse, can also help assess the person's condition and guide further treatment.

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  • 35. 

    Which of the following is not associated with eccrine sweat glands?

    • Most numerous

    • Produces watery sweat

    • Causes loss of body heat

    • Most numerous in arm pits and groin

    Correct Answer
    A. Most numerous in arm pits and groin
    Explanation
    Eccrine sweat glands are most numerous in the palms of the hands and soles of the feet, not in the armpits and groin. These sweat glands are responsible for producing watery sweat, which helps regulate body temperature by causing loss of heat through evaporation. Therefore, the statement "most numerous in arm pits and groin" is not associated with eccrine sweat glands.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 01, 2010
    Quiz Created by
    Vanecbpr

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