Answer to Question #56071 in Human Anatomy and Physiology for sue

Question

At what point during an action potential do the sodium voltage-gated channels close?

a.
At the start of the hypopolarization phase

b.
At the start of the hyperpolarization phase

c.
At the end of the repolarization phase

d.
At the end of the depolarization phase

e.
The sodium voltage-gated channels are always slightly open

Answer 1

d.
At the end of the depolarization phase