What do you Understand by Cardiac Chronotropy?

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Which of the following receptor subtypes increases cardiac chronotropy (rate) and inotropy (contractility), increases AV-node conduction velocity, and increases rennin secretion in renal juxtaglomerular cells?

a) α1 (Gq/Gi/Go)

b) α2 (Gi/Go)

c) β1 (Gs)

d) β2 (Gs)

e) β3

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