Chapter 5 The Integumentary System
These hormones, which can be released during times of stress, loosen the connections between keratinocytes.
glucocorticoids
All of the following are true of the dermis, except __________.
the hypodermis is part of the dermis
What is the initial response of the skin to being exposed to the ultraviolet rays of sunlight?
Epidermal cells produce cholecalciferol.
According to the textbook, which of the following organs is stimulated by calcitriol
Small intestine
Patterns established by these fibers determine the lines of cleavage
collagen and elastic fibers
What is the composition of the nail body?
dead, tightly compressed epidermal cells packed with keratin
With aging, hair turns gray or white due to which of the following causes?
decreased melanocyte activity
The most populous sweat glands are of which glandular type?
merocrine
In dark-skinned individuals, __________.
the melanosomes are larger