The nerve fibers in the dermis stimulate
A. muscles and glands in the dermis.
B. blood vessels in the epidermis.
C. melanocytes in the epidermis.
D. fat cells in the subcutaneous layer.
Answer: A
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Excess hydrogen ion is eliminated from the body largely by
A) sweating. B) the kidneys. C) the liver. D) the feces. E) buffers.
At the end of inspiration, how much of the air in the alveoli is fresh air?
a. about 3% b. about 5% c. about 8% d. about 10% e. about 13%
secretes oil to prevent the eyelids from sticking together?
What will be an ideal response?What will be an ideal response?
If a 5% glucose solution were separated from a 10% glucose solution by a membrane that was permeable to both water and glucose:
a. glucose would move from the 5% solution to the 10% solution b. water would move from the 5% solution to the 10% solution c. the movement of glucose between the two solutions would be equal d. water would move from the 10% solution to the 5% solution