Question

give 3 features of cardiac muscles.........​

Answer 1

Answer:

Cardiac muscles are involuntary muscles. They are involved in continuous rhythmic contraction and relaxation.

Cardiomyocytes or the cardiac cells are uninucleate, cylindrical, and elongated.

Cardiac muscles display faint cross-striations which do not get fatigued under normal circumstances.

Answer 2

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Cardiac muscles are found in heart. Characteristics of cardiac muscles are (any three):

• The muscles have striations just like skeletal muscles by having actin and myosin filaments that are arranged into sarcomeres.

• The muscles have an involuntary function as their functioning is not under our control.

• The muscles are myogenic - means the contractions are generated within the muscles.

• The muscles consist of a network of interconnected muscle fibres each of which has numerous mitochondria, myofibrils with sarcomere and many nuclei.

• The muscle tissue has no regenerative capacity.

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