Conduction of action potentials in myelinated axons. Introduction: Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

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Answer 1

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Chapter 7, Problem 22RA

Summary Introduction

To review:

Conduction of action potentials in myelinated axons.

Introduction:

Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

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Explain how action potentials are conducted by an unmyelinated axon.

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Answer 2

Question

Chapter 7, Problem 22RA

Summary Introduction

To review:

Conduction of action potentials in myelinated axons.

Introduction:

Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

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Answer 3

Question

Chapter 7, Problem 22RA

Summary Introduction

To review:

Conduction of action potentials in myelinated axons.

Introduction:

Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

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Answer 4

Question

Chapter 7, Problem 22RA

Summary Introduction

To review:

Conduction of action potentials in myelinated axons.

Introduction:

Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

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Answer 5

Chapter 7, Problem 22RA

Summary Introduction

To review:

Conduction of action potentials in myelinated axons.

Introduction:

Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

Answer 6

Chapter 7, Problem 22RA

Summary Introduction

To review:

Conduction of action potentials in myelinated axons.

Introduction:

Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

Answer 7

Chapter 7, Problem 22RA

Summary Introduction

To review:

Conduction of action potentials in myelinated axons.

Introduction:

Myelinated axons have myelin sheaths across the length of the axon. The myelin found in the Central nervous system (CNS) comes from wrappings of Schwann cells and in Peripheral nervous system (PNS), it is derived from oligodendrocytes. They serve as insulation for the axons by preventing movement of Na+ (sodium) and K+ (potassium) ions across the membrane.

Answer 8

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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 that myelinated axons carry out action potential conduction with the help of the nodes of Ranvier which are close to each other.

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