Increased venous tone will
A. allow blood to pool in the veins.
B. help return blood to the heart.
C. stabilize blood velocity in the veins.
D. dilate the veins.
E. relax the veins.
Answer: B
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Acetylcholine is the main neurotransmitter released by
A. preganglionic sympathetic neurons and motor neurons. B. preganglionic sympathetic neurons and cells of the adrenal medulla. C. motor neurons and postganglionic sympathetic neurons. D. preganglionic sympathetic neurons and postganglionic sympathetic neurons. E. cells of the adrenal medulla and postganglionic parasympathetic neurons.
Decreased cardiac output may lead to ____.
What will be an ideal response?
The formation of a pocket of the plasma membrane to bring in solid materials is called
A. pinocytosis. B. phagocytosis. C. facilitated diffusion. D. exocytosis.
Which structure in the diencephalon relays information to the cerebrum?
A) Pituitary gland B) Thalamus C) Hypothalamus D) Pineal body