Q 3.     Give three features of cardiac muscles.

Answers (1)

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

(i) Cardiac muscles are involuntary. They cannot be controlled by will.

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

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

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