Oxytocin
A. stimulates ejection of milk from the breasts.
B. secretion is regulated by a negative feedback loop.
C. is produced and secreted by cells in the supraoptic nucleus of the hypothalamus.
D. is produced only in females.
E. All of the choices are correct.
Answer: A
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In the parasympathetic division, ________ ganglia are located in the wall of the target organ.
Fill in the blank(s) with the appropriate word(s).
Where would you NOT find a cholinergeric nicotinic receptor?
A) all postganglionic neurons (cell bodies and dendrites) B) adrenal medulla hormone producing cells C) sarcolemma of skeletal muscle cells at neuromuscular junctions D) all parasympathetic target organs
Stepping on a piece of glass would most likely invoke a ________ reflex.
A. stretch B. Golgi tendon C. pain D. withdrawal E. motor
John Smith works outdoors in the winter at a ski resort. His thyroid hormone levels are
A. lower in the winter to conserve body heat. B. higher in the winter to increase body temperature. C. lowered in the summer after his job to decrease body temperature. D. increased in the summer after his job to increase body temperature. E. unaffected by his job.