The target cells for the hormone ACTH are located in the ______
A) hypothalamus
B) posterior pituitary
C) adrenal cortex
D) anterior pituitary
Ans: C) adrenal cortex
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What neurotransmitter is released by both preganglionic and postganglionic parasympathetic neurons at their synapses?
A) epinephrine B) both epinephrine and norepinephrine C) norepinephrine D) acetylcholine
Why is brown fat important?:
a. It is the newborn's primary source of insulation. b. It can be broken down to generate heat for thermoregulation. c. It can be broken down for energy between feedings. d. It can be converted to white fat.
Stimulation of the aortic baroreceptors reflexively results in
A) stimulation of the cardioaccelerator center in the brain. B) increased sympathetic stimulation of the heart. C) increased activity by the parasympathetic nervous system. D) stimulation of the vasoconstrictive center. E) increased heart rate.
The appearance of the signs and symptoms of AIDS in an HIV-infected individual generally appear after the virus has had enough time
to replicate within host tissue cells and to cause death and destruction of cells critical to mounting a normal immune response. Indicate whether the statement is true or false.