The three stages of voltage-gated Na + channels in neurons. Concept introduction: The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

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Answer 1

Question

Chapter 12.6, Problem 16WDYL

Summary Introduction

To describe:

The three stages of voltage-gated Na+ channels in neurons.

Concept introduction:

The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

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Describe the action potential in terms of the different functional states of the voltage- gated Na+ membrane channels (Note: there are three states)

What are the functions of voltage-gated Na+ channels in neurons?

At the peak of an action potential, would the relative permeability of Na be higher than K? Which ion would be the least permeable to the membrane during falling phase?

Answer 2

Question

Chapter 12.6, Problem 16WDYL

Summary Introduction

To describe:

The three stages of voltage-gated Na+ channels in neurons.

Concept introduction:

The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

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Answer 3

Question

Chapter 12.6, Problem 16WDYL

Summary Introduction

To describe:

The three stages of voltage-gated Na+ channels in neurons.

Concept introduction:

The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

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Answer 4

Question

Chapter 12.6, Problem 16WDYL

Summary Introduction

To describe:

The three stages of voltage-gated Na+ channels in neurons.

Concept introduction:

The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

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Answer 5

Chapter 12.6, Problem 16WDYL

Summary Introduction

To describe:

The three stages of voltage-gated Na+ channels in neurons.

Concept introduction:

The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

Answer 6

Chapter 12.6, Problem 16WDYL

Summary Introduction

To describe:

The three stages of voltage-gated Na+ channels in neurons.

Concept introduction:

The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

Answer 7

Chapter 12.6, Problem 16WDYL

Summary Introduction

To describe:

The three stages of voltage-gated Na+ channels in neurons.

Concept introduction:

The unequal distribution of positive and negative charge across the cell membrane results in membrane potential of a cell. The rise and fall in the membrane potential of an axon in a specific location cause a series of electrical response or action potential.

Answer 8

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Answer 10

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Answer 11

Ch. 12.1 - Prob. 1WDYL Ch. 12.1 - Prob. 2WDYL Ch. 12.1 - Prob. 3WDYL Ch. 12.2 - Prob. 4WDYL Ch. 12.2 - Prob. 5WDYL Ch. 12.2 - Prob. 6WDYL Ch. 12.2 - Prob. 7WDYL Ch. 12.2 - Prob. 8WDYL Ch. 12.3 - Prob. 9WDYL Ch. 12.4 - If a person has a brain tumor, is it more likely...

Solution Summary: The author describes the three stages of voltage-gated Na + channels in neurons: resting, activation, and inactivation.

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