Muscles are usually attached at both ends to bones. The end that is attached to a bone that does not move is known as the
and the end that is attached to the
bone that is moved during contraction is called the

Origin ; insertion.

Explanation:

The end that is attached to a bone that does  not move is known as the

Origin

The end that is attached to the bone that is moved during contraction is called the___insertion.

A  muscle can be attached to a bone, muscles or tissues . During contraction or action of a muscle, and the bone attached to the muscle remains immobile, then the attachment is referred to as Origin but if the bone attached to the muscle  is mobile or moves then the  attachment is called an insertion.

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