MUSCLE PHYSIOLOGY

Detailed explanation-1: -Cardiac muscle makes up the thick middle layer of the heart and is surrounded by a thin outer layer called the epicardium or visceral pericardium and an inner endocardium.

Detailed explanation-2: -Cardiac muscles are found in the lining of the heart.

Detailed explanation-3: -Cardiac muscle cells (cardiomyocytes) are striated, branched, contain many mitochondria, and are under involuntary control. Each myocyte contains a single, centrally located nucleus and is surrounded by a cell membrane known as the sarcolemma.

Detailed explanation-4: -Cardiac muscle is an involuntary striated muscle tissue found only in the heart and is responsible for the ability of the heart to pump blood.