How muscles act on the wrist is complex to describe.

The muscle acts to close the eye and is the only muscle capable of doing so.

But his own muscles did not act freely to the will of his brain.

Tense the neck muscles just before impact and it acts like a spring.

Automatism is a state where the muscles act without any control by the mind, or with a lack of consciousness.

Men who have the brains and muscle to act on their own, but the discipline to be inhumanly fair.

These muscles act mostly to support your spine and body while other muscles do the work of moving you.

The four intrinsic muscles act to change the shape of the tongue, and are not attached to any bone.

The four extrinsic muscles act to change the position of the tongue, and are anchored to bone.

These three muscles act as flexors at the elbow joint.