Which nonopioid neurotransmitter is involved in control of pain pathways?
A. serotonin
B. enkephalin
C. dynorphin
D. ?-endorphin
ANS: A
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Which statement accurately compares filtration and reabsorption?
A. Filtration is driven by concentration gradients, whereas reabsorption depends on hydrostatic pressure. B. Filtration involves bulk flow of fluid out of the blood, whereas reabsorption is bulk flow back into the blood. C. Filtration happens at the venule end of a capillary bed and reabsorption happens in feeder arterioles. D. The direction of filtration can be either into or out of the blood, but reabsorption always involves fluids entering the blood.
Answer the following statements true (T) or false (F)
1. There are 24 cranial nerves.
Humans are most sensitive to which taste?
A) sweet B) bitter C) sour D) salty E) umami
For adults, a desirable level of total cholesterol is less than ________ mg/dl.
Fill in the blank(s) with the appropriate word(s).