What is the specific function of the cardiac muscle?

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Detailed Solution

The specific function of the cardiac muscle is to pump blood throughout the body by contracting rhythmically and continuously without fatigue.

The cardiac muscle is a special type of involuntary muscle found only in the walls of the heart. Its main job is to make the heart contract and relax, allowing blood to circulate through the body. This muscle works automatically, meaning we do not have to think about it for it to function. It beats about 70–80 times per minute in a healthy adult.

Structure of Cardiac Muscle:

It has striated fibers (striped in appearance).
It contains single or double nuclei per cell.
Cells are connected by intercalated discs that help transmit electrical impulses quickly.

Functions of Cardiac Muscle:

Function	Description
Pumping Blood	Contracts to push blood into arteries and throughout the body.
Rhythmic Contractions	Beats continuously and rhythmically without tiring.
Automatic Control	Works under the control of the autonomic nervous system, not conscious control.
Maintains Circulation	Keeps oxygen and nutrients moving to tissues and removes waste.

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