Epinephrine and norepinephrine are secreted by
A. gamma cells.
B. chief cells.
C. C cells.
D. oxyphil cells.
E. chromaffin cells.
Answer: E
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In tertiary structure the ________ bond is formed between two cysteine amino acids
A) hydrophilic B) hydrophobic C) hydrogen D) ionic E) disulfide
The element that is necessary for the proper function of the enzyme carbonic anhydrase is
A) iron. B) cobalt. C) zinc. D) selenium. E) iodine.
Epinephrine
a. is secreted by the adrenal medulla b. is secreted along with norepinephrine c. reinforces sympathetic nervous system activity d. mobilizes energy reserves e. has all of the above characteristics
Which is true when you are sympathetically stimulated?
a. the SA node depolarizes more rapidly. b. the myocardium repolarizes more rapidly. c. more Ca2+ results in more sarcomere crossbridge attachments. d. norepinephrine is stimulating the heart. e. all of these answers.