Integumentary Practice Exam Part 1 - A & P Zoo 172 For Exam 1

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Integumentary System Quizzes & Trivia

This is a part one of a practice exam for the first Exam in Zoology 172 A & P for Nursing School at Miami University. This covers integumentary system and some skeletal system.


Questions and Answers
  • 1. 

    What is the largest organ in the human body?

    • A.

      Skeleton

    • B.

      Liver

    • C.

      Heart

    • D.

      Integument

    • E.

      Large intestines

    Correct Answer
    D. Integument
    Explanation
    The integument refers to the skin, which is the largest organ in the human body. It covers and protects the internal organs, muscles, and bones, and also helps regulate body temperature. The skin plays a vital role in preventing the entry of harmful substances and pathogens, and it also helps in the production of vitamin D. Additionally, the skin contains sensory receptors that allow us to feel touch, pain, and temperature.

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  • 2. 

    Skin has how many tissue layers?

    • A.

      3

    • B.

      2

    • C.

      4

    • D.

      1

    Correct Answer
    B. 2
    Explanation
    The hypodermis or subcutaneous is UNDER the skin NOT part of it.

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  • 3. 

    What disease is known as "the great imitator?"

    • A.

      Hodgekin's Disease

    • B.

      Melanoma

    • C.

      Lyme Disease

    • D.

      Shingles

    Correct Answer
    C. Lyme Disease
    Explanation
    Lyme disease is known as "the great imitator" because its symptoms can mimic those of other diseases, making it difficult to diagnose. The disease is caused by the bacterium Borrelia burgdorferi and is transmitted to humans through the bite of infected black-legged ticks. Symptoms of Lyme disease can include fatigue, fever, headache, muscle and joint aches, and swollen lymph nodes, which can resemble symptoms of other illnesses such as the flu. If left untreated, Lyme disease can lead to more serious complications affecting the joints, heart, and nervous system.

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  • 4. 

    The epidermis is made up of _____ layers.

    • A.

      2

    • B.

      4

    • C.

      5

    • D.

      3

    • E.

      6

    Correct Answer
    C. 5
    Explanation
    The epidermis is the outermost layer of the skin and is made up of five layers. Each layer has a specific function in protecting the body from external factors such as bacteria, UV radiation, and water loss. The layers of the epidermis include the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale. These layers work together to provide a barrier against harmful substances and maintain the overall health of the skin.

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  • 5. 

    The deepest layer of the epidermis is the __________.

    • A.

      Stratum granulosum

    • B.

      Stratum spinosum

    • C.

      Stratum basale

    • D.

      Stratum corneum

    Correct Answer
    C. Stratum basale
    Explanation
    The deepest layer of the epidermis is called the stratum basale. This layer is also known as the basal cell layer and is responsible for the continuous production of new cells that make up the epidermis. The cells in the stratum basale are constantly dividing and pushing older cells towards the surface of the skin, where they eventually become part of the outermost layer called the stratum corneum. The stratum basale also contains melanocytes, which produce the pigment melanin that gives color to the skin.

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  • 6. 

    The dermis is avascular?

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The dermis is not avascular. It is a highly vascularized layer of the skin that contains blood vessels, lymphatic vessels, and nerve endings. These blood vessels supply oxygen and nutrients to the cells in the dermis and help regulate body temperature. The dermis also contains specialized structures such as hair follicles, sweat glands, and sebaceous glands, which are all supplied by blood vessels. Therefore, the statement that the dermis is avascular is incorrect.

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  • 7. 

    The process whereby skin cells die and harden is called____________.

    • A.

      Granulosum

    • B.

      Carcenoma

    • C.

      Keratinization

    • D.

      Transformation

    Correct Answer
    C. Keratinization
    Explanation
    Keratinization is the correct answer because it refers to the process in which skin cells undergo a series of changes, including cell death and hardening, to form a tough, protective layer on the surface of the skin. This process involves the production of a protein called keratin, which gives the skin its strength and durability. The other options, granulosum, carcenoma, and transformation, do not accurately describe the process of skin cell death and hardening.

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  • 8. 

    Brownish/black hair has more ______________.

    • A.

      Melanin

    • B.

      Eumelanin

    • C.

      Pheomelanin

    Correct Answer
    B. Eumelanin
    Explanation
    Brownish/black hair has more eumelanin. Eumelanin is a pigment responsible for the dark color of hair, skin, and eyes. It is produced by specialized cells called melanocytes. The amount and type of melanin produced by these cells determine the color of an individual's hair. Higher levels of eumelanin result in darker hair, while lower levels or a different type of melanin called pheomelanin result in lighter hair colors such as blonde or red.

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  • 9. 

    The tension resisting layer of the epidermis that is called the prickly layer is __________.

    • A.

      Stratum corneum

    • B.

      Stratum lucidum

    • C.

      Stratum basale

    • D.

      Stratum spinosum

    Correct Answer
    D. Stratum spinosum
    Explanation
    The prickly layer of the epidermis is called the stratum spinosum. This layer is characterized by its spiny appearance due to the presence of desmosomes, which are cell junctions that provide strength and resistance to mechanical stress. The stratum spinosum is responsible for providing structural support and protection to the skin. It is located above the basal layer (stratum basale) and below the granular layer (stratum granulosum) in the epidermis.

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  • 10. 

    Langerhan's cells are found in the _____________ layer of the epidermis.

    • A.

      Stratum corneum

    • B.

      Stratum lucidum

    • C.

      Stratum spinosum

    • D.

      Stratum granulosum

    Correct Answer
    C. Stratum spinosum
    Explanation
    Langerhans cells are immune cells found in the stratum spinosum layer of the epidermis. They play a crucial role in the body's immune response by capturing and presenting antigens to other immune cells. This layer is located above the stratum basale and below the stratum granulosum. The stratum spinosum is responsible for providing strength and support to the epidermis, making it an ideal location for Langerhans cells to carry out their immune functions.

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  • 11. 

    The specialized cells in the stratum basale  for light touch sensation are ________.

    • A.

      Merkle cells

    • B.

      Pacinian corpuscles

    • C.

      Meissner's corpuscles

    Correct Answer
    A. Merkle cells
    Explanation
    Merkle cells are specialized cells found in the stratum basale that are responsible for light touch sensation. These cells have long processes that extend into the epidermis and are connected to nerve fibers. When these cells are stimulated by light touch, they send signals to the brain to interpret the sensation. Pacinian corpuscles and Meissner's corpuscles are also sensory receptors involved in touch sensation, but they are not located in the stratum basale.

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  • 12. 

    Stratum granulosum is the epidermal layer that provides waterproofing.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The stratum granulosum is indeed the epidermal layer that provides waterproofing. This layer is composed of flattened cells that contain keratin, a protein that helps to form a waterproof barrier on the skin's surface. This barrier prevents water from entering or leaving the body, helping to maintain hydration and protect against infections. Therefore, the statement is true.

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  • 13. 

    Which layer of the epidermis can only be found in thick skin which is only found on the palms of the hand and soles of the feet?

    • A.

      Stratum corneum

    • B.

      Stratum lucidum

    • C.

      Stratum granulosum

    • D.

      Stratum basale

    Correct Answer
    B. Stratum lucidum
    Explanation
    The stratum lucidum is the layer of the epidermis that can only be found in thick skin, such as the palms of the hand and soles of the feet. This layer is translucent and consists of flattened, densely packed cells that are filled with a protein called eleidin. It provides extra protection to these areas of the body and helps to prevent friction and damage.

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  • 14. 

    The papillary layer is in the____________.

    • A.

      Dermis

    • B.

      Epidermis

    Correct Answer
    A. Dermis
    Explanation
    The papillary layer is located in the dermis. The dermis is the second layer of the skin, located beneath the epidermis. It is composed of connective tissue and contains various structures such as blood vessels, hair follicles, sweat glands, and nerve endings. The papillary layer specifically refers to the upper layer of the dermis, characterized by its finger-like projections called papillae. These papillae help increase the surface area of the skin and contain capillaries that supply nutrients to the epidermis.

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  • 15. 

    The nerve endings found in the dermal papillae and are for light touch are the ____________.

    • A.

      Merkle cells

    • B.

      Pacinian corpuscles

    • C.

      Meissner's corpuscles

    Correct Answer
    C. Meissner's corpuscles
    Explanation
    Meissner's corpuscles are the nerve endings found in the dermal papillae that are responsible for light touch. These specialized sensory receptors are located in the skin's upper layers and are particularly sensitive to changes in stimuli such as gentle pressure or vibration. Meissner's corpuscles are abundant in areas of the body that require high tactile acuity, such as the fingertips, lips, and palms. They play a crucial role in our ability to perceive fine touch and texture, allowing us to distinguish between different objects and surfaces.

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  • 16. 

    The outer layer of epidermis is the __________.

    • A.

      Stratum granulosum

    • B.

      Stratum basale

    • C.

      Stratum corneum

    • D.

      Stratum spinosum

    Correct Answer
    C. Stratum corneum
    Explanation
    The outer layer of the epidermis is called the stratum corneum. This layer is composed of dead skin cells that have undergone a process called keratinization, where they become tough and waterproof. The stratum corneum acts as a protective barrier for the underlying layers of the skin, preventing water loss and protecting against external factors such as bacteria and UV radiation.

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  • 17. 

    Melanoma is a type of ______________.

    • A.

      Skin cancer

    • B.

      Touch sensor

    • C.

      Pigment in the skin

    • D.

      Rock band

    Correct Answer
    A. Skin cancer
    Explanation
    Melanoma is a type of skin cancer. It is a malignant tumor that develops from melanocytes, the cells responsible for producing the pigment melanin. Melanoma is characterized by the uncontrolled growth of these cells, which can spread to other parts of the body if not detected and treated early. It is the most dangerous form of skin cancer and can be caused by factors such as excessive sun exposure, genetic predisposition, and weakened immune system. Early detection and regular skin checks are crucial for the successful management of melanoma.

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  • 18. 

    The subcutaneous layer is also called the ____________.

    • A.

      Deep layer

    • B.

      Endermis

    • C.

      Hypodermis

    • D.

      Reticular layer

    Correct Answer
    C. Hypodermis
    Explanation
    The subcutaneous layer is the innermost layer of the skin, located below the dermis. It is composed of adipose tissue and connective tissue, and its main function is to insulate and protect the body. It also serves as a storage site for fat and contains blood vessels and nerves. The term "hypodermis" is commonly used to refer to this layer, as it is situated beneath the dermis.

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  • 19. 

    The ___________ glands project into the hair follicles.

    • A.

      Eccrine

    • B.

      Apocrine

    • C.

      Sebaceous

    • D.

      Sudoriferous

    • E.

      Ceruminous

    Correct Answer
    C. Sebaceous
    Explanation
    Sebaceous glands are the correct answer because they are the glands that project into the hair follicles. These glands are responsible for producing and secreting sebum, an oily substance that helps to lubricate and waterproof the hair and skin. Sebaceous glands are found all over the body, except for the palms of the hands and the soles of the feet.

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  • 20. 

    Sweat glands are also called ______________ glands.

    • A.

      Ceruminous

    • B.

      Merocrine

    • C.

      Sebaceous

    • D.

      Sudoriferous

    Correct Answer
    D. Sudoriferous
    Explanation
    Sweat glands are also called sudoriferous glands because they are responsible for producing and secreting sweat. Sweat glands are found all over the body and help regulate body temperature by releasing sweat, which evaporates and cools the skin. The term "sudoriferous" is derived from the Latin words "sudor" meaning sweat and "ferre" meaning to bear or carry, indicating the function of these glands.

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  • 21. 

    ________ glands secrete ear wax.

    • A.

      Eccrine

    • B.

      Apocrine

    • C.

      Sebaceous

    • D.

      Sudoriferous

    • E.

      Ceruminous

    Correct Answer
    E. Ceruminous
    Explanation
    Ceruminous glands secrete ear wax. Ear wax, also known as cerumen, is a waxy substance produced by the ceruminous glands located in the ear canal. This wax helps to protect the ear by trapping dust, debris, and bacteria, preventing them from entering the ear and causing damage or infection. The ceruminous glands are specialized sweat glands found only in the ear canal and are responsible for the production of ear wax.

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  • 22. 

    ___________ glands are responsible for the odor in sweat due to bacteria metabolizing its secretions.

    • A.

      Eccerine

    • B.

      Apocrine

    • C.

      Sebaceous

    • D.

      Merocrine

    • E.

      Ceruminous

    Correct Answer
    B. Apocrine
    Explanation
    Apocrine glands are responsible for the odor in sweat due to bacteria metabolizing its secretions. These glands are found in areas with high hair follicle density, such as the armpits and groin. When the apocrine glands secrete sweat, it contains proteins and lipids that bacteria on the skin break down, resulting in the characteristic odor. Eccrine glands, on the other hand, produce sweat that is primarily composed of water and electrolytes and does not have an odor. Sebaceous glands produce sebum, which is an oily substance that lubricates the skin and hair. Merocrine glands are another name for eccrine glands. Ceruminous glands produce earwax.

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  • 23. 

    Sebaceous glands produce an oily substance called _________.

    • A.

      Serum

    • B.

      Sebum

    • C.

      Sirrus

    • D.

      Merocrine

    Correct Answer
    B. Sebum
    Explanation
    Sebaceous glands produce an oily substance called sebum. Sebum is a natural oil that helps lubricate and protect the skin and hair. It is produced by the sebaceous glands and helps to keep the skin moisturized. Sebum also plays a role in protecting the skin from bacteria and other harmful substances.

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  • 24. 

    The smooth muscles that pull the hair follice to an erect position are the __________.

    • A.

      Tensor facaie

    • B.

      Arrector pili

    • C.

      Levatator scapulum

    • D.

      Levator labii

    Correct Answer
    B. Arrector pili
    Explanation
    The smooth muscles that pull the hair follicle to an erect position are called arrector pili. These muscles are attached to the hair follicles and contract in response to various stimuli such as cold or fear. When they contract, the hair stands on end, creating "goosebumps" or "piloerection". This response is believed to be a leftover evolutionary trait from when our ancestors had more hair and needed to appear larger or intimidate predators.

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  • 25. 

    The hair shaft is made up of __________.

    • A.

      Melanin

    • B.

      Dead keratinocytes

    • C.

      Apocrine

    • D.

      Dead leukocytes

    Correct Answer
    B. Dead keratinocytes
    Explanation
    The hair shaft is made up of dead keratinocytes. Keratinocytes are the main cells found in the outermost layer of the skin, known as the epidermis. These cells produce a tough protein called keratin, which forms the structural component of hair, nails, and the outer layer of the skin. As hair grows, the keratinocytes in the hair follicle are pushed up and out, becoming compacted and forming the hair shaft. Therefore, the hair shaft is composed of dead keratinocytes.

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  • 26. 

    The hair follicle is part of the __________.

    • A.

      Dermis

    • B.

      Epidermis

    Correct Answer
    B. Epidermis
    Explanation
    The hair follicle is part of the epidermis. The epidermis is the outermost layer of the skin and contains the hair follicles, which are small sacs that produce and hold the hair. The dermis, on the other hand, is the layer beneath the epidermis and contains the blood vessels, nerves, and other structures of the skin. Therefore, the correct answer is epidermis.

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  • 27. 

    At the base of the nail plate is a whitish, thickened, "half-moon shaped" area called the _______.

    • A.

      Nail bed

    • B.

      Nail root

    • C.

      Lunula

    • D.

      Cuticle

    Correct Answer
    C. Lunula
    Explanation
    The correct answer is "lunula". The lunula is a whitish, thickened, "half-moon shaped" area located at the base of the nail plate. It is a visible part of the nail matrix and is responsible for producing new nail cells. The lunula is often more visible in the thumbnail compared to other nails.

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  • 28. 

    Heat is carried away from the body by all of these methods EXCEPT __________.

    • A.

      Radiation

    • B.

      Conduction

    • C.

      Convection

    • D.

      Dehydration

    • E.

      Evaporation

    Correct Answer
    D. Dehydration
    Explanation
    Dehydration is the process of losing water from the body, not heat. Heat can be carried away from the body through radiation, conduction, convection, and evaporation.

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  • 29. 

    When heat is lost through contact with a substance with a lower temperature this is called_____.

    • A.

      Radiation

    • B.

      Conduction

    • C.

      Convection

    • D.

      Dehydration

    • E.

      Evaporation

    Correct Answer
    B. Conduction
    Explanation
    When heat is lost through contact with a substance with a lower temperature, this is called conduction. Conduction is the transfer of heat energy between objects that are in direct contact with each other. In this case, the heat is transferred from the warmer substance to the cooler substance through direct contact, resulting in the loss of heat. Radiation, on the other hand, refers to the transfer of heat through electromagnetic waves, while convection involves the transfer of heat through the movement of fluids. Dehydration and evaporation are unrelated to the transfer of heat through contact with a substance with a lower temperature.

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  • 30. 

    When heat is lost by being carried away by sweat this is called_______.

    • A.

      Radiation

    • B.

      Conduction

    • C.

      Convection

    • D.

      Dehydration

    • E.

      Evaporation

    Correct Answer
    E. Evaporation
    Explanation
    When heat is lost by being carried away by sweat, this process is called evaporation. Sweat is produced by our body to cool down when it gets hot. As the sweat on our skin evaporates, it takes away heat energy from our body, resulting in a cooling effect. This is why we feel cooler when we sweat.

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  • 31. 

    When heat is lost by dissipation from the body to the environment this is called ______.

    • A.

      Radiation

    • B.

      Conduction

    • C.

      Convection

    • D.

      Dehydration

    • E.

      Evaporation

    Correct Answer
    A. Radiation
    Explanation
    When heat is lost by dissipation from the body to the environment, it is called radiation. Radiation refers to the transfer of heat through electromagnetic waves, without the need for direct contact between objects. In this process, heat energy is emitted from the body in the form of infrared radiation, which can be absorbed by the surrounding environment. This is different from conduction, which is the transfer of heat through direct contact, convection, which is the transfer of heat through the movement of fluids, dehydration, which refers to the loss of water from the body, and evaporation, which is the process of liquid turning into vapor.

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  • 32. 

    When heat is lost  due to heated air rising and cooler air replacing it this is called ________.

    • A.

      Radiation

    • B.

      Conduction

    • C.

      Convection

    • D.

      Dehydration

    • E.

      Evaporation

    Correct Answer
    C. Convection
    Explanation
    Convection is the process of heat transfer through the movement of a fluid, in this case, air. When heated air rises and cooler air replaces it, heat is transferred from the warmer air to the cooler air. This is a form of convection.

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  • 33. 

    Heat is conserved by all of the following EXCEPT _________.

    • A.

      Contraction of the arrector pili

    • B.

      Sweating

    • C.

      Shivering

    • D.

      Vasoconstriction

    Correct Answer
    B. Sweating
    Explanation
    Heat is conserved by all of the given options except sweating. Sweating is the body's mechanism to cool down and regulate body temperature. When we sweat, the moisture on our skin evaporates, taking away heat from the body. This helps in cooling down the body and preventing overheating. On the other hand, the contraction of the arrector pili, shivering, and vasoconstriction are all mechanisms that help in conserving heat. The contraction of the arrector pili traps air and creates insulation, shivering generates heat through muscle contractions, and vasoconstriction reduces blood flow to the skin surface, minimizing heat loss.

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  • 34. 

    When the body's core temperature is over heated this is called_________.

    • A.

      Hyperthermia

    • B.

      Hyopthermia

    Correct Answer
    A. Hyperthermia
    Explanation
    Hyperthermia is the correct answer because it refers to a condition where the body's core temperature is elevated beyond normal levels. This can occur due to various reasons such as exposure to extreme heat, prolonged physical activity, or certain medical conditions. Hyperthermia can lead to symptoms like excessive sweating, dizziness, nausea, and in severe cases, it can be life-threatening. It is important to take immediate measures to cool down the body and seek medical attention if hyperthermia is suspected.

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  • 35. 

    Hyperthermia is a __________ loop.

    • A.

      Positive feedback

    • B.

      Negative feedback

    Correct Answer
    A. Positive feedback
    Explanation
    Hyperthermia refers to an abnormally high body temperature. In a positive feedback loop, a change in a certain direction leads to an amplification of that change, rather than a return to the initial state. In the case of hyperthermia, an increase in body temperature triggers physiological responses that further increase body temperature, leading to a vicious cycle. Therefore, hyperthermia can be considered a positive feedback loop.

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  • 36. 

    The skin can appear orangish due to ___________.

    • A.

      Jaundice

    • B.

      Ingested carrots

    • C.

      A bad spray tan

    Correct Answer
    B. Ingested carrots
    Explanation
    Ingested carrots can cause the skin to appear orangish due to a condition called carotenemia. Carrots are rich in carotenoids, such as beta-carotene, which can accumulate in the body when consumed in large amounts. These carotenoids can give a yellow or orange tint to the skin, especially in areas with a high concentration of sweat glands, such as the palms and soles of the feet. This discoloration is harmless and temporary, and it can be resolved by reducing carrot intake.

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  • 37. 

    The skin can appear yellowish along with the sclera of the eye due to ___________.

    • A.

      Jaundice

    • B.

      Ingested carrots

    • C.

      A really bad spray tan

    Correct Answer
    A. Jaundice
    Explanation
    Jaundice is a condition characterized by a yellowish discoloration of the skin and the whites of the eyes. It occurs when there is a buildup of bilirubin in the body, which is a yellow pigment produced when red blood cells are broken down. This buildup can be caused by various factors such as liver disease, hepatitis, or blockage of the bile ducts. The yellowish appearance of the skin and sclera is a result of the excess bilirubin depositing in these tissues. Ingested carrots and a bad spray tan would not cause this yellowish discoloration.

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  • 38. 

    Superficial cuts usually leave a scar.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Superficial cuts usually do not leave a scar. Superficial cuts only affect the top layers of the skin, which are able to regenerate and heal without leaving a permanent mark. Scarring is more common with deeper cuts that reach the dermis layer of the skin.

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  • 39. 

    As deep wounds begin to heal, they form a white, foam-like substance.  This is pus and you should wash this off to let the wound air out.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This is granulation tissue and is the first tissue in the replacement process. Leave it alone.

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  • 40. 

    A second degree burn is classified as a full thickness burn.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    A second degree burn is not classified as a full thickness burn. A second degree burn affects both the epidermis and the dermis layers of the skin, but does not penetrate through the entire thickness of the skin. Full thickness burns, on the other hand, involve damage to all layers of the skin, including the underlying tissues. Therefore, the statement is false.

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  • 41. 

    A sunburn is an example of a _____ degree burn.

    • A.

      First

    • B.

      Second

    • C.

      Third

    Correct Answer
    A. First
    Explanation
    A sunburn is an example of a first-degree burn because it only affects the outer layer of the skin, known as the epidermis. First-degree burns are characterized by redness, pain, and mild inflammation, which are common symptoms of a sunburn. The damage caused by a first-degree burn is usually superficial and does not result in blistering or scarring.

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  • 42. 

    Burns that may not be painful due to sensory nerves having been destroyed are found in a _______ degree burn.

    • A.

      First

    • B.

      Second

    • C.

      Third

    Correct Answer
    C. Third
    Explanation
    Third degree burns are characterized by the destruction of all layers of the skin, including the sensory nerves. This means that the person may not experience pain in the affected area because the nerves responsible for transmitting pain signals have been damaged or destroyed. Therefore, burns that are not painful due to sensory nerve destruction are typically found in third degree burns.

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  • 43. 

    Blistering is associated with _______ degree burns.

    • A.

      First

    • B.

      Second

    • C.

      Third

    Correct Answer
    B. Second
    Explanation
    Blistering is associated with second-degree burns.

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  • 44. 

    According to the rule of nines, someone with a burn with blisters over the entire anterior torso and down the anterior right lower extremity would have.

    • A.

      Third degree burns of 18% of body.

    • B.

      Second degree burns over 18% of body.

    • C.

      Second degree burns over 27% of body.

    • D.

      Third degree burns over 27% of body.

    Correct Answer
    C. Second degree burns over 27% of body.
    Explanation
    According to the rule of nines, the body is divided into different regions, with each region representing a certain percentage of the total body surface area. The anterior torso accounts for 18% of the body, and the anterior right lower extremity accounts for 9% of the body. If someone has second degree burns over the entire anterior torso (18%) and down the anterior right lower extremity (9%), the total percentage of the body affected by second degree burns would be 27%. Therefore, the correct answer is second degree burns over 27% of the body.

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  • 45. 

    An example of a long bone is the __________.

    • A.

      Femur

    • B.

      Illium

    • C.

      Spine

    • D.

      Talus

    Correct Answer
    A. Femur
    Explanation
    The femur is an example of a long bone because it is one of the longest and strongest bones in the human body. Long bones are characterized by their elongated shape and consist of a shaft (diaphysis) and two ends (epiphyses). The femur fits this description as it is a long, cylindrical bone that forms the thigh bone. It provides support, stability, and enables movement in the lower body.

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  • 46. 

    The bones of the skull are considered___________.

    • A.

      Sesamoid bones

    • B.

      Long bones

    • C.

      Irregular bones

    • D.

      Flat bones

    • E.

      Short bones

    Correct Answer
    D. Flat bones
    Explanation
    The bones of the skull are considered flat bones because they are thin, flat, and curved in shape. Flat bones provide protection to underlying organs and have a broad surface area for muscle attachment. The skull bones, such as the frontal bone and parietal bones, fit the characteristics of flat bones as they are relatively thin and provide protection to the brain.

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  • 47. 

    The bones of the wrists and ankles are considered _________.

    • A.

      Sesamoid bones

    • B.

      Long bones

    • C.

      Irregular bones

    • D.

      Flat bones

    • E.

      Short bones

    Correct Answer
    E. Short bones
    Explanation
    Short bones are the correct answer because the bones of the wrists and ankles are typically small and cube-shaped. Short bones provide stability and support, as well as allow for limited movement. They are found in areas that require fine motor control, such as the hands and feet. Sesamoid bones are small bones embedded within tendons and are not typically found in the wrists and ankles. Long bones are longer than they are wide, irregular bones have complex shapes, and flat bones are thin and flat.

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  • 48. 

    The vertebrae are considered ___________.

    • A.

      Sesamoid bones

    • B.

      Long bones

    • C.

      Irregular bones

    • D.

      Flat bones

    • E.

      Short bones

    Correct Answer
    C. Irregular bones
    Explanation
    The vertebrae are considered irregular bones because they do not fit into any of the other four categories of bone classification (long bones, short bones, flat bones, and sesamoid bones). Irregular bones have complex shapes and do not have a consistent length, width, or thickness. The vertebrae are irregular bones due to their unique structure and function in the vertebral column, which provides support and protection for the spinal cord.

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  • 49. 

    The patella is considered a/an _________.

    • A.

      Sesamoid bone

    • B.

      Long bone

    • C.

      Irregular bone

    • D.

      Flat bone

    • E.

      Short bone

    Correct Answer
    A. Sesamoid bone
    Explanation
    The patella is considered a sesamoid bone because it is a small, round bone that is embedded within a tendon. Sesamoid bones are typically found in locations where tendons pass over joints, such as the patella in the knee. They help to protect the tendon and improve its mechanical advantage. The patella acts as a fulcrum for the quadriceps muscles, increasing their leverage and improving the efficiency of knee extension.

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  • 50. 

    The humerus is considered a ___________.

    • A.

      Sesamoid bone

    • B.

      Long bone

    • C.

      Irregular bone

    • D.

      Flat bone

    • E.

      Short bone

    Correct Answer
    B. Long bone
    Explanation
    The humerus is considered a long bone because it is longer than it is wide and has a shaft-like structure. Long bones are typically found in the appendicular skeleton and are responsible for providing support, strength, and mobility. They consist of a shaft (diaphysis) and two ends (epiphyses) and are primarily composed of compact bone with a central marrow cavity. Examples of long bones include the femur, tibia, and fibula.

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Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 24, 2009
    Quiz Created by
    Shelleyr
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