Describe the structure of a cardiac muscle.

Explanation

Cardiac (striped and involuntary) muscle : The cardiac muscle is striated like the skeletal muscle (shows sarcomeres). Cardiac muscle is found in the .myocardium. of the heart of vertebrates. The cardiac muscle cells or the .myocardial cells. are short, cylindrical, mononucleate or binucleate cells whose ends branch and form junctions with other cardiac muscle cells. Each myocardial cells is joined to adjacent myocardial cells by .electrical synapses. or .gap junctions.. They permit .electrical impulses. to be Cardiac muscle .conducted along the long axis of the cardiac muscle fibre. The dark lines across cardiac muscle are called intercalated discs (IDs). These discs are highly characteristic of the cardiac muscle.