MCAT Question A Day - 9/8/14 | FreeMCATPrep.com

MCAT Question A Day - 9/8/14

During an action potential, a cardiac muscle cell remains depolarized much longer than a neuron. This is most likely to:

A. prevent the initiation of another action potential during contraction of the heart.

B. ensure that adjacent cardiac muscle cells will contract at different times.

C. keep the neuron from firing twice in rapid succession.

D. allow sodium voltage-gated channels to remain open long enough for all sodium to exit the cell.

Click Here for the solution

Want more questions? - Click here to check out our MCAT Question A Day archive