In muscle anatomy, the attachment to the movable bone is the:

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Multiple Choice

In muscle anatomy, the attachment to the movable bone is the:

Explanation:
The moving attachment is the insertion. When a muscle contracts, the end that attaches to the bone that moves is pulled toward the other end, producing movement at the joint. This is why the insertion is described as the attachment to the movable bone. For example, the biceps inserts on the radius, and as the muscle shortens, the radius moves to flex the elbow. The other terms described—center part of the muscle or immovable part of the bone—do not refer to the moving attachment, so they don’t fit the question.

The moving attachment is the insertion. When a muscle contracts, the end that attaches to the bone that moves is pulled toward the other end, producing movement at the joint. This is why the insertion is described as the attachment to the movable bone. For example, the biceps inserts on the radius, and as the muscle shortens, the radius moves to flex the elbow. The other terms described—center part of the muscle or immovable part of the bone—do not refer to the moving attachment, so they don’t fit the question.

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