The depolarization phase of an action potential requires _____.

a.opening of K+ channels in the membrane
b.opening of Na+ channels in the membrane
c. opening of Ca2+ channels in the membrane
d. a K+ concentration gradient across the membrane
e. a Ca2+ concentration gradient across the membrane

Question

The depolarization phase of an action potential requires _____.

a.opening of K+ channels in the membrane
b.opening of Na+ channels in the membrane
c. opening of Ca2+ channels in the membrane
d. a K+ concentration gradient across the membrane
e. a Ca2+ concentration gradient across the membrane

anonymous · Answer

The answer that I think is most correct is B?

anonymous · Answer

yes it's B, for a little more info see. http://openstudy.com/users/exuras#/updates/4f74ceb6e4b0f07ddab140de