Question

heart muscle is special. Why?

Answer 1

Cardiac muscle (heart muscle) is one of the three major types of muscle, the others being skeletal and smooth muscle. It is an involuntary, striated muscle that is found in the walls of the heart. . Diseases of heart muscle are of major importance.

Answer 2

"Cardiac muscle (Heart muscle) is one of the three major types of muscle, the others being skeletal and smooth muscle. It is an involuntary, striated muscle that is found in the walls of the heart. This muscle tissue is known as myocardium, and forms a thick middle layer between the outer layer of the heart wall (the epicardium) and the inner layer (the endocardium). Myocardium is composed of individual heart muscle cells (cardiomyocytes) joint together by intercalated disks, encased by collagen fibres and other substances forming the extracellular matrix.