Caffeine has effects on conducting cells and contractile cells that are similar to those of NE.What effect would drinking large amounts of caffeinated beverages have on the heart rate?
A)heart rate would increase
B)heart rate would decrease
C)heart rate would stay the same but contraction would increase
D)heart rate would stay the same but contraction would decrease

Question

Quizplus · Accepted Answer

Caffeine has a stimulatory effect on the heart and increases heart rate by increasing the firing rate of conducting cells and increasing contractility of the heart muscle. Drinking large amounts of caffeinated beverages can lead to a significant increase in heart rate.

Caffeine Has Effects on Conducting Cells and Contractile Cells That