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Cardiac muscle is found in?

Last updated date: 29th Feb 2024
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IVSAT 2024
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Hint: Muscle tissue is classified into three groups in the muscular system: skeletal, cardiac, and smooth. Each category has a distinct structure and a distinct function. Skeletal muscle is responsible for the movement of bones and other structures. Cardiac muscle contracts in order for the heart to pump blood. To promote bodily functions, the smooth muscle tissue that shapes organs such as the stomach and bladder changes shape.

Complete answer:
Cardiac muscle tissue can only be located in the heart, where cardiac contractions pump blood across the body and keep blood pressure stable. Cardiac muscle is a streaked, involuntary muscle which forms the heart's main tissue. The cardiac muscle (myocardium) is a thick middle layer between the outer layer of the heart wall (pericardium) and the inner layer (endocardium), with blood supplied by the coronary circulation.
It is composed of cardiac muscle cells that are connected by intercalated discs and are surrounded by collagen fibres and other extracellular matrix substances.

Additional information:
Connective tissues connect structures, provide a foundation and support for organs and the body as a whole, store fat, distribute substances, defend against disease, and aid in tissue repair.

Cardiac muscle, like skeletal muscle, is striated and organised into sarcomeres, with the same banding organisation. Cardiac muscle fibres, on the other hand, are shorter than skeletal muscle fibres and typically contain only one nucleus, which is located in the cell's middle. Since ATP is generated primarily by aerobic metabolism, cardiac muscle fibres contain a high concentration of mitochondria and myoglobin.