ANATOMY

Detailed explanation-1: -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-2: -The physiological properties of the cardiac muscle are: 1. Rhythmicity 2. Excitability 3. Contractility 4.

Detailed explanation-3: -Cardiac muscle cells are branched and contain intercalated discs, which skeletal muscles do not have.

Detailed explanation-4: -Cardiac muscle, like skeletal muscle, is a striated muscle and much of the mechanism of contraction of the two muscle types is similar. Both use the proteins actin and myosin arranged in a highly organized lattice as the basis of the force-generating apparatus.