Origin & Insertions of Muscles Flashcards
O: Lateral third of the clavicle
I: Deltoid tuberosity
Deltoid Anterior
O: Acromion process
I: Deltoid tuberosity
Deltoid Middle
O: Spine of scapula
I: Deltoid tuberosity
Deltoid Posterior
O: Long head: Supraglenoid tubercle of scapula
Short head: Coracoid process of scapula
I: Radial tuberosity of radius
Biceps Brachii
O: Coracoid process of the scapula
I: Medial surface of humerus near midpoint
Coracobrachialis
O: Medial third of the clavicle
I: Lateral lip of bicipital groove of humerus (inferior to sternal portion)
Pectoralis Major Clavicular
O: Via the thoracolumbar fascia, the spinous processes of T7–L5, posterior surface of iliac crest and sacrum
I: Floor of bicipital groove
Latissimus Dorsi
O: Sternum, costal cartilage of first six ribs
I: Lateral lip of bicipital groove of humerus (superior to the clavicular portion)
Pectoralis Major Sternal
O: Inferior axillary border of scapula near inferior angle
I: Medial lip of bicipital groove
Teres Major
O: Long head: Infraglenoid tubercle of scapula
Lateral head: Inferior to greater tubercle on posterior humerus
Medial head: Posterior surface of humerus
I: Olecranon process of ulna
Triceps Brachii
O: Supraspinous fossa of the scapula
I: Greater tubercle of the humerus
Supraspinatus
O: Infraspinatus fossa of scapula
I: Greater tubercle of humerus
Infraspinatus
O: Axillary border of scapula
I: Greater tubercle of humerus
Teres Minor
O: Subscapular fossa of the scapula
I: Lesser tubercle of the humerus
Subscapularis
