In order to retain heat, what occurs in the skin on a cold day?
A. Blood vessels of the dermis constrict.
B. Blood vessels of the dermis dilate.
C. Blood vessels of the epidermis constrict.
D. Blood vessels of the epidermis dilate.
(
Question 2) . Drugs that are administered by skin patches tend to be _______ soluble molecules that are absorbed ________.
A. lipid; slowly
B. lipid; quickly
C. water; slowly
D. water; quickly
(
Question 3) Cancer cells in the epidermis are attacked by
A. Merkel cells.
B. epidermal dendritic cells.
C. melanocytes.
D. keratinocytes.
(
Question 4) Sensory receptors in the dermis detect touch, temperature, and light.
Indicate whether this statement is true or false.
(
Question 5) One of the components of sweat is the nitrogenous waste urea.
Indicate whether this statement is true or false.
(
Question 6) When exposed to ultraviolet light, keratinocytes convert a steroid precursor into ________, a molecule that is crucial for regulation of calcium levels.
A. calcitriol
B. cholecalciferol
C. calcitonin
D. creatine
E. phosphorus
(
Question 7) From what else, besides physical trauma, does the skin provide protection?
What will be an ideal response?
(
Question 8) Production of this vitamin requires skin exposure to the sun. This vitamin is crucial for regulation of calcium and phosphate.
A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin D
E. Vitamin E
(
Question 9) Immune cells of the epidermis tend to be found in the stratum:
A. granulosum.
B. lucidum.
C. spinosum.
D. basale.
E. corneum.
(
Question 10) Skin is an entirely waterproof barrier, preventing all gain or loss of fluid from the skin except sweat.
Indicate whether this statement is true or false.
Quick Reply
