Question

What is the thick layer of the heart wall that contains contractile cardiac muscle tissue?

Answer 1

Myocardium

Explanation:

Human heart has three layers in its wall :

1. Endocardium

2. Myocardium

3. Epicardium

The inner layer endocardium consists of a single layer of squamous epithelium resting on a thin layer of loose connective tissue.

The middle layer myocardium contains contractile cardiac muscle tissue.

The epicardium is a thin layer consisting of single layer of squamous epithelium.