Scapula
| Muscle
| Origin
| Insertion
| Action
|
| Trapezius(upper)
| External part of occipiatal bone, C7
| Lateral 1/3 of clavicle and acromion
| Elevates scapula, rotates sc apula upwards, retracts scapula
|
| Trapezius(middle)
| Spinous process of T1-T5
| Superior border of spine of scapula
| Retracts and elevates scapula
|
| Trapezius(lower)
| Spinous process of T6-T12
| Medial 1/3 of spine of scapula
| Depresses scapula, retracts scapula, rotates scapula upwwards, stabilizatio of scapula
|
| Levator scapulae
| Transverse process C1-C4
| Border of scapula between superior angle and spine of scapula
| Elevates scapula, rotates scapula downwards, elevates and retracts scapula
|
| Rhomboid major
| spinous processes of T2-T5
| Medial border of scapula from spine of scapula to interior angle
| Retracts and elevates scapula
|
| Rhomboid minor
| Spinous processes of C7-T1
| Medial border of scapula
| Retracts and elevates scapula, rotates scapula downwards
|
| Serratus anterior
| Superior lateral surfaces of uupper 8 or 9 ribs at side of chest
| Costal surface of vertebral border alongn inferior angle of scapula
| Protracts scapula, rotates scapula upwards
|
| Pectoralis minor
| Anterior surface of 3-5th ribs
| Coracoid process of scapula
| Depresses scapula, rotates scapula downwards, anterior shoulder stabilizer
|
| Subcalvius
| First rib
| Inferior surface of clavicle
| Depresses clavicle, pulls clavicle inferiorlyl and anteriorly
|