Pectoralis Major - Origin

Sternum and clavicle

Pectoralis Major - Insertion

Bicipital groove of humerus

Pectoralis Major - Action

Adduction & medial rotation of humerus

Pectoralis Major - Innervation

Lateral pectoral nerve

Pectoralis Minor - Origin

Ribs 3-5

Pectoralis Minor - Insertion

Coracoid process

Pectoralis Minor - Action

Protraction, depression, & downward rotation of the scapula

Pectoralis Minor - Innervation

Medial pectoral nerve

Supraspinatus - Origin

Supraspinous fossa

Supraspinatus - Insertion

Greater tubercle of humerus

Supraspinatus - Action

Abduction to humerus

Supraspinatus - Innervation

Suprascapular nerve

Infraspinatus - Origin

Infraspinous fossa

Infraspinatus - Insertion

Greater tubercle of humerus

Infraspinatus - Action

Lateral rotation & extension of humerus

Infraspinatus - Innervation

Suprascapular nerve

Teres Major - Origin

Inferior angle of scapula

Teres Major - Insertion

Bicipital groove of humerus

Teres Major - Action

Extension, medial rotation, & adduction of humerus

Teres Major - Innervation

Subscapular nerve

Teres Minor - Origin

Lateral border of scapula

Teres Minor - Insertion

Greater tubercle of humerus

Teres Minor - Action

Lateral rotation & extension of humerus

Teres Minor - Innervation

Axillary nerve

Subscapularis - Origin

Subscapular fossa

Subscapularis - Insertion

Lesser tubercle of humerus

Subscapularis - Action

Medial rotation & adduction of humerus

Subscapularis - Innervation

Subscapular nerve