Question

What is the difference between T-calcium channels and L-calcium channels?

a. T-channels can inactivate (close) after a few milliseconds; L-channels are incapable of inactivation.
b. T-channels dictate presynaptic cardiac transmission; L-channels are involved in postsynaptic cardiac transmission.
c. T-channels flux calcium into a cardiac muscle cell; L-channels flux calcium out of cardiac muscle.

Answer 1

The correct answer is B

Step-by-step explanation:

L-channels are related to cardiac contraction, while T-channels are related to the depolarization of the Sinus node and the AV node.