Scapula - Comparative anatomy скачать в хорошем качестве

Scapula - Comparative anatomy

The Scapula forms the basis of the shoulder region, providing points of attachment of extrinsic and intrinsic muscles. It is held in place by a synsarcosis of muscles and does not form a conventional articulation with the trunk. In ungulates, the dorsal border is extended by a scapular cartilage, which enlarges the area for muscle attachment. This ossifies with age. The bone is roughly triangular, with a prominent spine that can be palpated through the skin. The spine: defines infraspinous and supraspinous fossae, inhabited by the infraspinatus and supraspinatus muscles respectively serves as a point of attachment for the trapezius muscle culminates in the acromion in all but not the horse and pig. the cat also possesses a suprahamate process which lies proximal to the acromion and projects caudally. Just cranial to the glenoid cavity can be seen a bony prominence called the supraglenoid tubercle which is the origin of the biceps bracii muscle Medial muscle attachment consist mostly of the subscapularis, with the serratus ventralis attaching dorsally. The Scapula articulates with the humerus at the glenoid cavity.