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| T/F? Regardless of race, all human beings have about the same number of melanocytes. |
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| T/F? The apocrine sweat glands are fairly unimportant in thermoregulation. |
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| T/F? Joe just burned himself on a hot pot. A blister forms and the burn is painful. Joe's burn would best be describes as a third-degree burn. |
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| T/F? The dermis is rich in blood vessels and nerve fibers. |
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| T/F? Sweat glands continuously produce small amounts of sweat, even in cooler temperatures. |
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| Which gland produces sweat that aids in thermoregulation? |
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Select the most true statement concerning skin cancer.
a.) Most tumors that arise on the skin are malignant.
b.) Squamous cell carcinomas arise from the stratum corneum.
c.) Basal cell carcinomas are the least common but most malignant.
d.) Melanomas are rare but must be removed quickly to prevent them from metastasizing. |
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Definition
| Melanomas are rare but must be removed quickly to prevent them from metastasizing. |
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Which of the phrases listed below is not one of the main functions of the integumentary system?
a.) Protection
b.) Vitamin B creation
c.) Temperature regulation
d.) Touch sensation |
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Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage?
a.) The skin is protected by the synthesis of three pigments that contribute to the skin's color.
b.) Carotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight.
c.) The skin is protected by increasing the number of epidermal dendritic cells, which help to activate the immune system.
d.) Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen. |
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Definition
| Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen. |
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Acne is a disorder associated with ___.
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Which of the following statements best describes what fingernails actually are?
a.) Fingernails are a modification of the epidermis.
b.) Fingernails are derived from osseous tissue.
c.) Fingernails are extensions of the carpal bones.
d.) Fingernails are a separate tissue from the skin, formed from a different embryonic layer. |
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Definition
| Fingernails are a modification of the epidermis. |
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Term
In addition to protection (physical and chemical barrier), the skin serves other functions. Which of the following is another vital function of the skin?
a.) It converts modified epidermal cholesterol to vitamin D precursor important to calcium metabolism.
b.) It aids in the transport of materials throughout the body.
c.) The cells of the epidermis store glucose as glycogen for energy.
d.) It absorbs vitamin C so that the skin will not be subject to diseases. |
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Definition
| It converts modified epidermal cholesterol to vitamin D precursor important to calcium metabolism. |
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Term
| What is the first threat to life from a massive third-degree burn? |
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Which of the terms listed is not an appendage (accessory) organ of the integumentary system?
a.) Pain receptors
b.) Sweat glands
c.) Hair follicles
d.) Finger nails |
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| What are the cells that produce the pigment responsible for different colors of the skin? |
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| ___ are pigment-producing cells in the epidermis. |
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| ___ is the vitamin that is produced in your skin after 20 minutes of sun exposure. |
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