Sympathetic stimulation of the postganglionic cells of the adrenal medulla causes the release of ________.
A. epinephrine and norepinephrine
B. norepinephrine and acetylcholine
C. aldosterone
D. cortisol
E. acetylcholine and epinephrine
Answer: A
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A) Gravity B) Pressure C) Valves D) Bulk flow
If a second stimulus arrives before the relaxation phase has ended, a second, more powerful contraction occurs. This is called
A) Incomplete tetanus. B) Complete tetanus. C) Treppe. D) Wave summation. E) Recruitment.
You would normally expect to find ____________________ in the kidney tubules.
A) simple squamous epithelium B) simple cuboidal epithelium C) stratified squamous epithelium D) transitional epithelium E) simple columnar epithelium
The cell bodies of first order somatosensory neurons are found in the:
a. olive b. red nucleus c. dorsal root ganglia d. collateral ganglia