Deltoid Definition Anatomy

Medical definition of deltoid tuberosity. It is also known as the common shoulder muscle particularly in other animals such as the domestic cat.

Surface Anatomy

Medical definition of deltoid.

Deltoid definition anatomy. The deltoid is widest at the top of the shoulder and narrows to its apex as it travels down the arm. A rough triangular bump on the outer side of the middle of the humerus that is the site of insertion of the deltoid. Anatomically it appears to be made up of three distinct sets of fibers though electromyography suggests that it consists of at least seven groups that can be independently coordinated by the nervous system.

Deltoid definition a large triangular muscle covering the joint of the shoulder the action of which raises the arm away from the side of the body. Arises from the shoulder girdle in continuity from the outer third of the front of the clavicle the acromion of the scapula above the shoulder and the spine of the scapula behind it. It contracts to move the arm up from the side.

A large triangular muscle that covers the shoulder joint and serves to raise the arm laterally. Abduction of the arm at the shoulder. The muscle roughly triangular in shape that stretches from the collarbone clavicle over the shoulder to the upper bone of the arm humerus.

Contraction of the deltoid muscle results in a wide range of movement of the arm at the shoulder due to its location and the wide separation of its muscle fibers. The muscle which covers the shoulder joint. Anterior border of the lateral third of the clavicle.

The deltoid tuberosity on the lateral surface of the proximal humeral shaft. Axillary nerve c5 c6. The deltoid muscle is the muscle forming the rounded contour of the human shoulder.

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