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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

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Section
BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909
Textbook Problem

Which of the following means the ability to transmit electrical current from one cell to another?

A. Conductivity

B. Excitability

C. Contractility

D. Automaticity

Summary Introduction

Introduction:

There are two types of cardiac cells that compose the heart, namely the autorhythmic cells and the contractile muscle fibers. The autorhythmic cells are also known as the pacemaker cells. The bulk of the musculature is formed by the myocardial contractile cells. There are four specific properties of the cardiac cells, namely automaticity, excitability, conductivity, and contractility.

Explanation

Justification for the correct answer:

Option (a) is, ‘conductivity.’ Conductivity is one of the properties of the cardiac cells. It is the ability of the cells of the heart to transmit electrical current from one cell to another. Hence, option (a) is correct.

Justification for the incorrect answers:

Option (b) is, ‘excitability.’ Excitability is the ability of the heart cell to reach its threshold. The ability to transmit electrical current from one cell to another is known as conductivity...

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