Rotator

Rotator Average ratng: 4,1/5 550 votes

In anatomy, the rotator cuff is a group of muscles and their tendons that act to stabilize the shoulder and allow for its extensive range of motion. Of the seven scapulohumeral muscles, four make up the rotator.

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ro·ta·tor mus·cle

2. muscle that produces a rotation, alone or in concert with other rotators, around an axis, for example, rotator muscles of vertebral column.

ro·ta·to·res (mus·cles)

[TA]
deepest of the three layers of transversospinalis muscles, chiefly developed in the thoracic region; they arise from the transverse process of one vertebra and are inserted into the root of the spinous process of the next two or three vertebrae above; action, traditionally described as a column, it is more likely that these muscles, provided with a very high density of muscle spindles, are organs of proprioception; nerve supply, dorsal primary rami of the spinal nerves.

rotator

(rō′tā′tər)n.
2. pl.rotatores(rō′tə-tôr′ēz)Anatomy A muscle that serves to rotate a part of the body.

ro·ta·tor

(rō'tā-tŏr)
A muscle by which a part can be turned circularly.
See also: rotation

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