A increased phase 4 depolarization due to increased ltfunny, Ask an Expert

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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.
46) As the adrenaline reaches the heart , which of the following 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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