Can you name and describe the muscle which is present only in our heart and works throughout our life?

Cardiac muscles are the muscles of heart which works in a regulated manner throughout our life.

Description:

STRUCTURE OF CARDIAC MUSCLE

1. Cardiac muscle, synonym for heart muscle, is the layer of muscle tissue present between the endocardium and epicardium. These inner and outer layers of the heart, respectively, surround the cardiac muscle tissue and separate it from the blood and other organs.

2. Cardiac muscle is made from sheets of cardiac muscle cells. These cells, unlike skeletal muscle cells, are typically unicellular connected to one another through special intercalated discs. These specialized cell junction and the arrangement of muscle cells enable cardiac muscle to contract quickly and repeatedly, forcing blood throughout the body.

3. Cardiac muscles are composed of tubular cardiomyocytes, or cardiac muscle cells. The cardiomyocytes are composed of tubular myofibrils, which are repeating sections of sarcomeres.

4. Intercalated disks transmit electrical action potentials between sarcomeres.