(a) To determine: The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons. Introduction: The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

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Answer 1

Question

Chapter 11.5, Problem 44AYP

Summary Introduction

(a)

To determine:

The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons.

Introduction:

The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

Summary Introduction

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

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Action potential conduction velocity is higher in a myelinated axon compared to an unmyelinated axon because … Question 1 options: a) the diameter of a myelinated axon is greater than the diameter of an unmyelinated axon. b) a myelinated axon has more voltage-gated sodium channels than an unmyelinated axon. c) less axonal membrane is exposed to the ECF in a myelinated axon compared to an unmyelinated axon. d) answers (a) and (b) are both correct; answer (c) is incorrect e) answers (a), (b) and (c) are all correct

Why are action potentials usually conducted in one direction?(A) Ions can flow along the axon in only one direction.(B) The brief refractory period prevents reopening of voltagegated Na+channels.(C) The axon hillock has a higher membrane potential thanthe terminals of the axon.(D) Voltage-gated channels for both Na+and K+open in onlyone direction.

During the refractory period a) if a neuron reaches threshold the action potential goes to completion b) No stimulus of any strength will trigger a new action potential c) It is possible to trigger a new action potential but only with an unusually strong stimulus d) The signal grows weaker with distance e) The neuron fires at its maximum voltage if a stimulus depolarizes the neuron to threshold

Answer 2

Question

Chapter 11.5, Problem 44AYP

Summary Introduction

(a)

To determine:

The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons.

Introduction:

The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

Summary Introduction

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

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Answer 3

Question

Chapter 11.5, Problem 44AYP

Summary Introduction

(a)

To determine:

The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons.

Introduction:

The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

Summary Introduction

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

Expert Solution & Answer

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Answer 4

Question

Chapter 11.5, Problem 44AYP

Summary Introduction

(a)

To determine:

The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons.

Introduction:

The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

Summary Introduction

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

Expert Solution & Answer

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Answer 5

Chapter 11.5, Problem 44AYP

Summary Introduction

(a)

To determine:

The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons.

Introduction:

The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

Summary Introduction

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

Answer 6

Chapter 11.5, Problem 44AYP

Summary Introduction

(a)

To determine:

The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons.

Introduction:

The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

Answer 7

Chapter 11.5, Problem 44AYP

Summary Introduction

(a)

To determine:

The comparison of action potential conduction’s speed in heavily myelinated, light myelinated, and unmyelinated axons.

Introduction:

The action potential is produced by the local potential. Local potentials are the unit of an action potential, and these local potentials summate at trigger zone for the formation of an action potential.

Answer 8

Summary Introduction

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

Answer 9

Summary Introduction

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 11.1 - List and give examples of the general functions of...Ch. 11.2 - Name the components of the CNS and the PNS.Ch. 11.2 - What are the following: sensory receptor, nerve,...Ch. 11.2 - Based on the direction they transmit action...Ch. 11.2 - Based on the structures they supply, what are the...Ch. 11.2 - Where are the cell bodies of sensory, somatic...Ch. 11.2 - What are the subcategories of the ANS?Ch. 11.2 - Compare the general functions of the CNS and the...Ch. 11.3 - Describe and give the function of a neuron cell...Ch. 11.3 - What is the function of the trigger zone?

Solution Summary: The author explains that the action potential is produced by the local potential, which sums at trigger zone for the formation of an action.

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(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

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Chapter 11 Solutions

Solution Summary: The author explains that the action potential is produced by the local potential, which sums at trigger zone for the formation of an action.

Concept explainers

Videos

(b) To determine: The comparison of action potential conduction’s speed in large and small-diameter axons. Introduction: The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.

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Chapter 11 Solutions

(b)

To determine:

The comparison of action potential conduction’s speed in large and small^-diameter axons.

Introduction:

The action potential is produced by the local potentials. The diameter of axons also plays an important role in determining the speed of action potential conduction.