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Muscles - Pectoral
Muscles of pectoral girdle, origin, insertion, & action
Muscle | Origin | Insertion | Action |
---|---|---|---|
Pectoralis minor | sternal ends of ribs 3-5 | coracoid process | depresses& abducts scapula |
Serratus anterior | ribs 1-8/9 | medial border of scapula | depresses & abducts scapula |
trapezius | occipital bone & spinous process's of c7 & T1-12 | clavicle, spine of scapula, acromion process | extends neck/head; elevates, upwardly rotates & adducts scapula |
Levator scapulae | c1-4 | medial border of scapula | elevates and adducts scapula |
Rhomboid major | SP's of T 2-5 | medial border of scapula | elevates and adducts scapula |
subclavius | R1 | inferior border of clavicle | depresses clavicle |
Rhomboid minor | Sp's c7 & T2 | medial border of scapula | elevates and adducts scapula |