The influence of oxytocin on the uterus during childbirth and the subsequent effect of uterine stretch on the release of oxytocin is an example of
a. negative feedback
b. positive feedback
c. extrinsic control
d. negative feedback and extrinsic control
e. none of these
B
Anatomy & Physiology
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What will be an ideal response
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When the first heart sound is heard, what is occuring with the heart valves?
a. The AV valves are opening. b. The AV valves are closing. c. The semilunar valves are opening. d. The semilunar valves are closing.
Anatomy & Physiology
All sensory impulse except the sense of smell pass through this structure on their way to the cerebrum:
a. thalamus b. cerebellum c. intermediate mass d. red nucleus
Anatomy & Physiology