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Q. Joe Average has just been frightened by a very loud noise as he was taking a very difficult physiology exam. In response, his adrenal glands have released a large amount of adrenaline into his circulation.

As the adrenaline reaches the heart, which of the follow effects would you expect to see in cardiac cells?

a) increased phase 4 depolarization due to increased

b) hyperpolarization of pacemaker cells due to increased conductance of G protein activated K+ channels

c) lower peak sarcoplasmic Ca concentrations ++ due to lower ryanodine recpetor opening

d) A and B

e) A and C

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Biology, Academics

Category:- Biology
Reference No.:- M9155842

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