UL Shoulder + Back muscles and ligaments Flashcards
Coracobrachialis origin and insertion
O: Corocoid process
I Medial aspect of humerus (shaft)
Levator Scapulae origin and insertion
O: Transverse processes C1-C4
I: Medial border of scapula, between superior angle and superior portion of Spine of scapula
Triceps origin and insertion
O:
Long head – Infraglenoid tubercle of the scapula
Lateral head – posterior surface of proximal half of the humerus
Medial head – posterior surface of the distal half of the humerus
I: Olecranon process of the ulna
Pectoralis Major origin and insertion
O: Medial half of clavicle, sternum and cartilage of the first-6th ribs
I: Crest of greater tubercle of humerus
Rhomboid major origin and insertion
O: Spinous processes of T2-T5
I: Medial border of scapula between spine of scapula and inferior angle.
Rhomboid Minor origin and insertion
O: Spinous processes of C7-T1
I: upper portion of medial border of scapula , across from spine of scapula
Pectoralis Minor origin and insertion
O: 3rd, 4th and 5th ribs
I: medial surface of corocoid process
Serratus Anterior origin and insertion
O: External surface of the upper 8/9 ribs
I: Anterior surface of the medial border of the scapula
Rotator Cuff muscles (4)
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
Supraspinatus origin and insertion
O – Supraspinus fossa.
I: Greater tubercle of humerus
Infraspinatus origin and insertion
O – Infraspinous fossa.
I: Greater tubercle of humerus
Teres Minor origin and insertion
O- Upper 2/3rds of lateral border scapula.
I: Greater tubercle of humerus
Subscapularis origin and insertion
O – Subscapular fossa.
I – Lesser tubercle of humerus
Latissimus Dorsi origin and insertion
O: Inferior angle of scapula, spinous processes of T7-T12, last ¾ ribs, thoracolumbar fascia and posterior iliac crest
I: Intertubercle groove of humerus
Teres Major origin and insertion
O: Inferior angle and lower 1/3 of lateral border of scapula
I: crest of the lesser tubercle of the humerus