Caffeine Has Effects on Conducting Cells and Contractile Cells That

Multiple Choice

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