PRINCIPLE OF LIFE (LL)W/ACHIEVE>CUSTOM<
PRINCIPLE OF LIFE (LL)W/ACHIEVE>CUSTOM<
3rd Edition
ISBN: 9781319530709
Author: HILLIS
Publisher: MAC HIGHER
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Chapter 31, Problem 1.1Q
Summary Introduction

To determine: The time taken by an action potential in order to cover one meter while moving along the axon.

Introduction: Action potential refers to a massive change in membrane voltage that has constant magnitude and can spread to adjacent areas of the membrane. The frequency of action potential increases with the intensity of the stimulus.

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Explanation of Solution

The area of the cell membrane with an action potential is referred to as a depolarized cell membrane. This is because the electrical polarity of this region is negative in the outside rather than positive. A mammalian nerve cell normally transmits signals with a velocity of 20 to 100 meters per second.

The time taken by the action potential to cover one meter is approximately between 0.01 and 1 second. This is because the velocity of an action potential depends on the diameter of axon. Also, the action potential fails to move through the myelinated axon segments.

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