Secretions from ________ glands contribute to the acid mantle that inhibits bacterial growth on the skin.
A. sebaceous
B. apocrine sweat
C. mammary
D. ceruminous
E. merocrine sweat
Answer: E
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Arnold enters a darkened movie theater on a sunny summer afternoon. It takes many minutes for his eyes to adapt to the darkness because
A. the rods in the eye work only in bright light, and it takes time for the cones to work in weak light. B. the iris takes time to close after being subjected to bright light. C. it takes some time for the retina to rebuild its rhodopsin stores from opsin and retinal. D. the optic nerve fatigues in bright light, and it takes time to recover.
What happens when osteoblast activity exceeds osteoclast activity?
A. bone hypertrophy B. bone modeling C. increased bone mass D. all of the above
Sympathetic fibers originate from ____________________ and ____________________ spinal nerves
Fill in the blank(s) with correct word
If the partial pressure of oxygen in the blood decreases from 40 mmHg to 20 mmHg, what will occur to the amount of oxygen bound to hemoglobin?
a) Hemoglobin will quickly bind oxygen, increasing its percent saturation. b) Hemoglobin will quickly unload the oxygen that it is carrying, increasing its percent saturation. c) Hemoglobin will quickly unload the oxygen that it is carrying, decreasing its percent saturation. d) Hemoglobin will quickly bind oxygen, decreasing its percent saturation.