Difference Between Three Types of Muscles on the Basis of their Structure
There are three types of muscles in the animal body: skeletal, smooth, and cardiac muscle. Each type of muscle has a unique structure that allows it to perform its specific functions.
Skeletal muscle: Three Types of Muscles
Skeletal muscle is composed of long, cylindrical cells called muscle fibers that are connected to bones by tendons. These muscles are controlled voluntarily and are responsible for movement, such as walking, running, and lifting. The cells of skeletal muscle are multinucleated and contain the protein myosin, which allows the muscle to contract and relax.
Smooth muscle:
Second out of Three Types of Muscles is Smooth muscle, is found in the walls of internal organs, such as the intestines, bladder, and blood vessels. Unlike skeletal muscle, smooth muscle is not under voluntary control and is responsible for functions such as digestion and regulation of blood pressure. The cells of smooth muscle are spindle-shaped and contain the protein actin, which allows the muscle to contract and relax.
Cardiac muscle:
Third out of Three Types of Muscles is Cardiac muscle is found in the heart and is responsible for pumping blood throughout the body. Cardiac muscle is unique in that it is both involuntary and self-excitable, meaning it has the ability to initiate contractions without input from the nervous system. The cells of cardiac muscle are branched and contain both myosin and actin, which allows the muscle to contract and relax.
In summary, the three types of muscles in the animal body, skeletal, smooth, and cardiac, have distinct structures that allow them to perform their specific functions. Skeletal muscle is composed of long, cylindrical cells and is controlled voluntarily. Smooth muscle is found in the walls of internal organs and is not under voluntary control. Cardiac muscle is found in the heart and is both involuntary and self-excitable.
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