Chapter 20, Problem 5TYC

Summary Introduction

Case summary:

In dilated cardiomyopathy of the left ventricle, the ventricle can become enormously enlarged.

Adequate information:

The muscular wall of the heart is known as myocardium. It helps in contraction and relaxation of the heart muscle the contraction of muscles results in pumping the blood out of the heart, whereas relaxation of muscle results in a refill of the chamber of the heart. The myocardium is composed of two membranes epicardium (outer membrane) and endocardium (inner membrane).

To determine:

The reason that leads to regurgitation of blood through the mitral valve during ventricular systole.

Given Information:

The cardiomyopathy of the left ventricle leads to regurgitation of blood and causes enlargement of the ventricle.