The two components of the integumentary system are the
cutaneous membrane and accessory structures.
The layer of the epidermis that contains abundant desmosomes is the stratum
spinosum
________ are cells in the epidermis that are part of the immune system.
Dendritic cells
Water loss from insensible perspiration
is approximately 0.5 liters a day.
An albino individual lacks the ability to produce
melanin
All of the following are true of the pigment melanin, except that it
decreases in concentration within cells during exposure to the sun.
Jaundice is indicated by a(n) ________ skin coloration.
yellowish
Exposure to ultraviolet light (sunlight) causes the skin to darken by increasing the production of
melanin
The ________ in keratinocytes protects the epidermis and dermis from the harmful effects of sunlight.
melanin
Which of the following is not an effect of ultraviolet radiation?
loss in skin pigmentation as seen in vitiligo
Which of the following is formed in the skin when it is exposed to sunlight?
vitamin D
Which of the following statements about rickets is not true?
It is usually genetic.
A surgical incision parallel to the lines of cleavage
closes and heals with relatively little scarring.
From what structure does sensible perspiration occur?
10
Which layer contains most of the accessory structures?
3
Accessory structures of the skin include all of the following except
- A) hair follicles.
- B) sebaceous glands.
- C) sweat glands.
- D) epidermis.
- E) nails.
epidermis
When the arrector pili muscles contract,
"goose bumps" are formed.
Glands that discharge an oily secretion into hair follicles are ________ glands.
sebaceous
Sensible perspiration is produced by ________ glands.
merocrine sweat
Which of the following happens if body temperature rises above normal?
Blood flow to the skin increases.
All of the following are true of perspiration produced by merocrine sweat glands except that it
produces the body odor characteristic of "sweating."
Skin can regenerate effectively even after considerable damage has occurred because
stem cells persist in the skin even after injury.
The following are stages in the regeneration of skin following an injury. What is the correct order for these events?
- inflammation
- cellular migration
- epidermis covers granulation tissue
- epidermis covers scar tissue
1, 2, 3, 4
Rapid water loss from burned skin is an extreme form of ________ perspiration.
insensible
Melanin is produced by melanocytes within the stratum
basale
A deficiency disease that illustrates the effect of integumentary system function on the structure of the skeletal system is
rickets
Vitamin D3 is important for proper ________ development.
bone