Question

During phase 3 of the action potential, (chose one)

A. chemical gated ion channels
B. voltage gated Na + channels
C. voltage gated K+ channels

are open and (chose one)
A. Na+ and K+
B. Na+ only
C. K+ only

is/are diffusing (chose one)
A. out of
B. into
C. both into and out of

Answer 1

C. voltage gated K+ channels are open and

C. K+ only is diffusing

C. both into and out of the cell during phase 3 of the action potential.