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Challenge Yourself
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1
"Strawberry-colored birthmarks" are also called
A)cavernous hemangiomas.
B)freckles.
C)capillary hemangiomas.
D)erythema.
2
The layer of the epidermis in which cells begin the process of keratinization is the
A)stratum corneum.
B)stratum basale.
C)stratum lucidum.
D)stratum granulosum.
3
The sweat glands that communicate with skin surfaces throughout the body, except in the axillary, areolar, and anal regions, are
A)apocrine glands.
B)merocrine glands.
C)sebaceous glands.
D)Both a and b are correct.
4
Which of the following is not a function of the integument?
A)acts as a physical barrier
B)stores calcium in the dermis
C)regulates temperature through vasoconstriction and dilation of dermal blood vessels
D)participates in immune defense
5
Which of the following layers contains areolar connective tissue and dermal papillae?
A)reticular layer
B)subcutaneous layer
C)papillary layer
D)epidermis
6
Melanin is
A)an orange-yellow pigment that strengthens the epidermis.
B)a pigment that accumulates inside keratinocytes.
C)a protein fiber found in the dermis.
D)a pigment that gives the characteristic color to hemoglobin.
7
A _____ degree burn typically involves the epidermis and part of the dermis. The subcutaneous layer is not affected.
A)first
B)second
C)third
D)fourth
8
The cells in a hair follicle that are responsible for forming hair are the
A)papillary cells.
B)matrix cells.
C)medullary cells.
D)cortex cells.
9
Which epidermal cell type is responsible for detecting touch sensations?
A)keratinocyte
B)melanocyte
C)tactile (Merkel) cell
D)epidermal dendritic (Langerhans) cell
10
Water loss due to evaporation of interstitial fluid through the surface of the skin is termed
A)latent perspiration.
B)sensible perspiration.
C)active perspiration.
D)insensible perspiration.





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