Membrane potential video PDF

Preview

Summary

Download Membrane potential video PDF

Description

Due in _____________________ No exceptions.

Name:________________________________

You may email this assignment ahead of time to [email protected] with “Membrane Potential video” in the subject title

Membrane potential Video questions (10 points) As you watch the video on Sakai entitled Membrane Potential, please answer the following questions and bring to lecture for turn-in: 1.

At which part of the cell are the events discussed in the video occurring?

2.

Is the outside of the neuron positive or negative?

3.

What is the electrical charge a result of?

4.

In a normal cell, where are most of the sodium ions? The cell’s exterior or interior?

5.

In a normal cell, where are most of the potassium ions? The cell’s exterior or interior?

6.

At 1:48, he uses the term “Sodium pumps”. What pump did we learn of in lecture that is responsible for pumping 3 sodium ions out for every 2 potassium ions in?

7.

In the region of the action potential, what opens up, and what is inactivated in the region of the impulse?

8.

What happens to the charge of the outside and inside of the membrane in the region of the action potential?

9.

What term did he use to describe the point of contact between two neurons where information is transferred?

https://www.youtube.com/watch?v=CvktREcRMAo`...