What are the types of muscles?

There are three types of muscle in the body. Bones are covered mostly in skeletal muscle, which creates movement by pulling on the bones. Smooth muscle keeps the digestive and other systems moving, while cardiac muscle causes the heart to beat non-stop.

Skeletal muscle

Found in the arms and legs, the long thread-like fibres of skeletal muscles shrink and shorten to move the bones. These are voluntary muscles, which means that we decide to move them.

Smooth muscle

Packed together in layered sheets, smooth muscle lines the walls of the digestive system, the airways, and the bladder. These muscles work automatically, to keep, vital body functions working.

Cardiac muscle

The walls of the heart are formed by cardiac muscle. This must contract continually to keep the heart beating. Cardiac muscle never gets tired, unlike other types of muscle.

 

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