The ________ system provides protection, water retention, thermoregulation, and vitamin D production.
A. muscular
B. digestive
C. lymphatic
D. integumentary
E. skeletal
Answer: D
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Perfusion is
A) delivery of oxygen to cells. B) the connection between capillaries and other vessels. C) blood flow through an organ. D) the driving force behind blood flow. E) movement of blood through a shunt.
Which is NOT true about the countercurrent multiplier system of the kidney?
A. It creates a hyperosmolar medullary interstitial fluid that allows the kidneys to form hypertonic urine. B. The ascending loop of Henle is not permeable to water. C. The fraction of filtered NaCl reabsorbed from the ascending limb equals the fraction of filtered water reabsorbed from the descending limb. D. The descending loop of Henle is permeable to water. E. There is active transport of sodium and chloride out of the ascending limb of the loop of Henle.
Each of the following local factors produces the relaxation of arteriolar smooth muscle except increased
a. acid b. carbon dioxide c. osmolarity d. oxygen e. potassium
Sweat gland secretion occurs in response to stimulation by the ________ division of the nervous system.
Fill in the blank(s) with the appropriate word(s).