Question

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Answer 1

Answer:

Listed below are three features of cardiac muscles:

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

Answer:

a) Above pic

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b) Heart, which pumps blood throughout the body, is made up of cardiac muscles. Three features of cardiac muscle are:

(i) Cardiac muscles are involuntary.

(ii) Cardiac muscle cells are cylindrical, branched and uninucleate.

(iii) Cardiac muscles show rhythmic contraction and relaxation throughout the life