The following: Explanation of all-or-none law of action potentials. Effects of raised stimulus strength on action potential production. Ways in which refractory periods exerts effect on the frequency of action potential production. Introduction: When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

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Answer 1

Question

Chapter 7, Problem 5aCP

Summary Introduction

To review:

The following:

Explanation of all-or-none law of action potentials.

Effects of raised stimulus strength on action potential production.

Ways in which refractory periods exerts effect on the frequency of action potential production.

Introduction:

When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

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Answer 2

Question

Chapter 7, Problem 5aCP

Summary Introduction

To review:

The following:

Explanation of all-or-none law of action potentials.

Effects of raised stimulus strength on action potential production.

Ways in which refractory periods exerts effect on the frequency of action potential production.

Introduction:

When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

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Answer 3

Question

Chapter 7, Problem 5aCP

Summary Introduction

To review:

The following:

Explanation of all-or-none law of action potentials.

Effects of raised stimulus strength on action potential production.

Ways in which refractory periods exerts effect on the frequency of action potential production.

Introduction:

When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

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Answer 4

Question

Chapter 7, Problem 5aCP

Summary Introduction

To review:

The following:

Explanation of all-or-none law of action potentials.

Effects of raised stimulus strength on action potential production.

Ways in which refractory periods exerts effect on the frequency of action potential production.

Introduction:

When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

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Answer 5

Chapter 7, Problem 5aCP

Summary Introduction

To review:

The following:

Explanation of all-or-none law of action potentials.

Effects of raised stimulus strength on action potential production.

Ways in which refractory periods exerts effect on the frequency of action potential production.

Introduction:

When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

Answer 6

Chapter 7, Problem 5aCP

Summary Introduction

To review:

The following:

Explanation of all-or-none law of action potentials.

Effects of raised stimulus strength on action potential production.

Ways in which refractory periods exerts effect on the frequency of action potential production.

Introduction:

When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

Answer 7

Chapter 7, Problem 5aCP

Summary Introduction

To review:

The following:

Explanation of all-or-none law of action potentials.

Effects of raised stimulus strength on action potential production.

Ways in which refractory periods exerts effect on the frequency of action potential production.

Introduction:

When a part of axon membrane gets depolarized, the positive feedback on sodium ion channel permeability makes the membrane potential increase above +30 millivolt. This slight increase does not move more than +30 millivolt as sodium ion channels tend to close quickly when the potassium ion channels open up. Hence, the size or amplitude of action potential becomes all-or-none. Moreover, action potentials are produced when stimulus of a prescribed intensity is steadily maintained at a particular point of axon.

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Answer 11

Ch. 7 - Draw a neuron, label its parts, and describe the...Ch. 7 - Distinguish between sensory neurons, motor...Ch. 7 - Describe the structure of the neurilemma, and...Ch. 7 - Explain how myelin sheaths are formed in the CNS....Ch. 7 - Explain what is meant by the blood-brain barrier....Ch. 7 - Define the terms depolarization and...Ch. 7 - Prob. 4bCP Ch. 7 - Describe how gating of Na+andK+ in the axon...Ch. 7 - Prob. 5aCP Ch. 7 - Prob. 5bCP

Solution Summary: The author explains the all-or-none law of action potentials and the way in which retory periods exert effect on the frequency.

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