Upper Extremity Origins

Pectoralis Major — Origin

Medial Clavicle, Sternum, Costal cartilages of ribs 2-6

Pectoralis Minor — Origin

Ribs 3-5

Trapezius — Origin

Superior Nuchal Line, External Occipital Protuberance, Ligamentum Nuchae, Spinous Processes of C7 and all Thoracic Vertebrae

Levator Scapulae — Origin

Transverse processes of upper four Cervical Vertebrae

Latissimus Dorsi — Origin

Lower Thoracic and Lumbar Vertebrae, Sacrum and Lumbodorsal Fascia (Thorocolumbar fascia/aponeurosis)

Serratus Anterior — Origin

Anterior superior surface of first eight or nine ribs

Rhomboideus Major — Origin

Spinous processes of second through fifth thoracic vertebrae

Rhomboideus Minor — Origin

Spinous processes of C7 and T1

Deltoid — Origin

Lateral Clavicle, Acromion process and spine of Scapula

Supraspinatus — Origin

Supraspinous Fossa

Infraspinatus — Origin

Infraspinous Fossa

Subscapularis — Origin

Subscapular Fossa

Teres Minor — Origin

Axillary border of Scapula above Teres Major

Teres Major — Origin

Inferior Axillary = border of Scapula

Triceps — Origin

Below the Glenoid Fossa and Posterior Shaft of Humerus

Biceps Brachii — Origin

Coracoid process and above the glenoid fossa

Coracobrachialis — Origin

Coracoid process of Scapula

Brachialis — Origin

Distal anterior surface of Humerus

Brachioradialis — Origin

Ridges superior to the Lateral Epicondyle of the Humerus