APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Cardiac muscle, like skeletal muscle, is made up of sarcomeres that allow for contractility. However, unlike skeletal muscle, cardiac muscle is under involuntary control. The cardiac muscle is responsible for the contractility of the heart and, therefore, the pumping action.

Detailed explanation-2: -Rapid, involuntary contraction and relaxation of the cardiac muscle are vital for pumping blood throughout the cardiovascular system.

Detailed explanation-3: -Myocardium – a thick, muscular middle layer that contracts and relaxes to pump blood around of your heart.

Detailed explanation-4: -Cardiac muscles are a type of specialized, striated muscle found only in the heart. They are under the control of the autonomic nervous system, which means they are involuntary and work autonomously. They also contain blood vessels that supply nutrients to cardiac muscle tissue and remove waste products.