PSYC 211- Midterm 1 Review

Brief overshoot before reaching res1ng membrane

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: r direc1on or even both direc1ons if started in the middle of the axon d)  The strength of a s1mulus is represented by the number of ac1on poten1als, not the size of the ac1on poten1al 8. Which of the following best summarizes the different phases of the ac1on poten1al? a)  The membrane poten1al reaches the threshold of excita1on of approximately - 60mV Na+ ions rush out of the cell during a depolariza1on phase K+ rushes into the cell during a repolariza1on phase There is a brief overshoot before reaching res1ng membrane poten1al of approximately - 70mV b) The membrane poten1al reaches the threshold of excita1on of approximately - 60mV Na+ ions rush into the cell during a depolariza1on phase K+ rushes out of the cell during a repolariza1on phase There is a brief overshoot before reaching res1ng membrane poten1al of approximately - 100mV c) The membrane poten1al reaches the threshold of excita1on of approximately - 100mV Na+ ions rush into the cell during a depolariza1on phase K+ rushes out of the cell during a repolariza1on phase There is a brief overshoot before reaching res1ng membrane poten1al of approximately - 70mV d) The membrane poten1al reaches the threshold of excita1on of approximately - 60mV Na+ ions rush into the cell during a depolariza1on phase K+ rushes out of the cell during a repolariza1on phase There is a brief overshoot before reachin...
View Full Document

This document was uploaded on 02/16/2014.

Ask a homework question - tutors are online