Author Question: During the relative refractory period, an initial threshold-level depolarization is usually not ... (Read 76 times)

bclement10 · **on:** Apr 11, 2021

Question 1

What stops the rising phase of the action potential?
◦ The sodium activation gate closes.
◦ The Na+ activation gate opens.
◦ The Na+ inactivation gate opens.
◦ The K+ gate closes.
◦ The Na+ inactivation gate closes.

Question 2

During the relative refractory period, an initial threshold-level depolarization is usually not sufficient to initiate an action potential. Why?
◦ Only some Na+ channels have returned to their resting position.
◦ The statement is incorrect; a threshold-level depolarization always triggers an action potential.
◦ Only K+ channels are still open, so Na+ entry is offset by K+ loss.
◦ Only a few K+ channels have returned to their resting position.
◦ Some Na+ channels have returned to their resting position and K+ channels are still open, so Na+ entry is offset by K+ loss.

leahm14 · **Reply #1 on:** Apr 11, 2021

A FREE account is required to view all solutions!

Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

Answer Preview

Only 45% of students answer this correctly