Search results
Results from the WOW.Com Content Network
In human anatomy, the acromion (from Greek: akros, "highest", ōmos, "shoulder", pl.: acromia) is a bony process on the scapula (shoulder blade). Together with the coracoid process, it extends laterally over the shoulder joint. The acromion is a continuation of the scapular spine, and hooks over anteriorly.
intermediate or acromial part (pars acromialis) The deltoid's fibres are Pennate muscle. However, electromyography suggests that it consists of at least seven groups that can be independently coordinated by the nervous system. [2] It was previously called the deltoideus (plural deltoidei) and the name is still used by some anatomists.
It is attached, by its apex, to the summit of the acromion just in front of the articular surface for the clavicle; and by its broad base to the whole length of the lateral border of the coracoid process. [2] This ligament, together with the coracoid process and the acromion, forms a vault for the protection of the head of the humerus.
The coracoid process acts as an attachment and origin for a large number of muscles (attached muscles not labeled here). The coracoid process is a thick curved process attached by a broad base to the upper part of the neck of the scapula; [2] it runs at first upward and medially; then, becoming smaller, it changes its direction, and projects forward and laterally.
The acrocoracoid process is an expansion adjacent to this contact surface, to which the shoulderward end of the biceps brachii muscle attaches in these animals. In birds (and generally theropods and related animals), the entire unit is rigid and called scapulocoracoid .
Its inferior surface forms part of the infraspinatous fossa, gives origin to a portion of the infraspinatus, and presents near its center the orifice of a nutrient canal. Of the three borders, the anterior is attached to the dorsal surface of the bone; the posterior, or crest of the spine, is broad, and presents two lips and an intervening ...
Clavicular facet of scapula is small oval facet on the medial border of the acromion for articulation with the acromial facet on the lateral end of the clavicle. [1] Also called Clavicular articular facet of acromion. The coracoacromial ligament is attached near the clavicular facet. [2]
The supraspinous fossa is bounded by the spine of scapula on the inferior side, acromion process on the lateral side and the superior angle of scapula on the superior side. Supraspinatus muscle originates from the supraspinous fossa. Distal attachment of the levator scapulae muscle is also on the medial aspect of the fossa.