In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate. Introduction: The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential. Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

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Answer 1

Question

Chapter 20, Problem 15CP

Summary Introduction

To determine:

In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate.

Introduction:

The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential.

Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

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Answer 2

Question

Chapter 20, Problem 15CP

Summary Introduction

To determine:

In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate.

Introduction:

The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential.

Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 20, Problem 15CP

Summary Introduction

To determine:

In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate.

Introduction:

The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential.

Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Chapter 20, Problem 15CP

Summary Introduction

To determine:

In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate.

Introduction:

The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential.

Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

Expert Solution & Answer

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Answer 5

Chapter 20, Problem 15CP

Summary Introduction

To determine:

In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate.

Introduction:

The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential.

Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

Answer 6

Chapter 20, Problem 15CP

Summary Introduction

To determine:

In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate.

Introduction:

The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential.

Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

Answer 7

Chapter 20, Problem 15CP

Summary Introduction

To determine:

In what way a drug that increases the length of time required for repolarization of pacemaker cells affects the heart rate.

Introduction:

The pacemaker cells of the SA (sinoatrial) node maintain a membrane potential closer to that of other cardiomyocytes. Their plasma membrane depolarizes to threshold level very quickly to produce action potential.

Any factor that can alter the duration of repolarization or the rate of depolarization will affect the heart rate by altering the time required to reach the threshold level.

Answer 8

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Answer 10

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Answer 11

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