21) Following their production in red bone marrow, dendritic cells circulate to what primary layer of the skin?
A) dermis
B) hypodermis
C) epidermis
22) Visible stretch marks on the skin surface are actually the result of microscopic tears in collagen fibers in which layer?
A) dermis
B) hypodermis
C) epidermis
23) When a blister forms due to friction, liquid pools between the epidermis and what other layer of the integument?
A) dermis
B) hypodermis
C) epidermis
24) If you were to have liposuction, you would have tissue removed from which layer?
A) dermis
B) hypodermis
C) epidermis
25) Which layer of the integument is found deep to the dermis?
A) dermis
B) hypodermis
C) epidermis
26) Is the human integumentary system best adapted for hot or cold climates?
A) cold, because we have many skin features that keep us from overheating
B) cold, because we have a thick hypodermis
C) warm, because sweating cools us in hot climates but we would die in cold climates without clothing
D) warm, because sebaceous glands aid us in hot climates but evaporative cooling would kill us in cold climates
27) The cells in the skin that store the most melanin granules are
A) dendritic cells.
B) tactile epithelial cells.
C) basal keratinocytes.
D) melanocytes.
28) Light-skinned people have less melanin in the superficial layers of their epidermis because
A) they are exposed to less UV radiation.
B) they have fewer melanocytes.
C) keratinocytes in their deeper layers rapidly digest melanin.
D) their melanocytes produce a pinkish color melanin instead of brown.
29) The type of sweat gland that begins to function at puberty and is involved in sexual signaling is
A) apocrine.
B) eccrine.
C) sebaceous.
D) holocrine.
30) The proximal nail fold is also called the nail's
A) matrix.
B) bed.
C) lunule.
D) eponychium.