Origin and Insertion Flashcards
Upper Trap
Origin: Occipital bone, nuchal ligament
Insertion: Outer third of clavicle, acromion process
Middle Trap
O: Spinous processes of C7-T3
I: Scapular spine
Lower Trap
O: Spinous processes of middle and lower trap
I: Base of the scapular spine.
Levator Scapulae
O: Transverse processes of the first four cervical vertebrae
I: Vertebral border of the scapula between the superior angle and spine.
Rhomboids
O: Spinous processes of C7-T5
I: Vertebral border of the scapula between the spine and inferior angle.
Deltoids
Anterior: Lateral third of clavicle
Middle: Acromion process
Posterior: Spine of the scapula
I: Deltoid tuberosity
Latissimus Dorsi
O:Spinous processes of T7 through L5, posterior surface of the sacrum, iliac crest, and lower three ribs
I: Medial floor of bicipital groove of the humerus.
Teres Major
O: inferior axillary border of the scapula near the inferior angle
I: Medial lip of the bicipital groove on the anterior surface of the humerus.
Supraspinatus
O: Supraspinatus fossa
I: Greater tubercle
Infraspinatus
O: Infraspinatus fossa
I: Greater tubercle
Teres minor
O: Axillary border of the scapula
I: Greater tubercle of the humerus
Biceps Brachi
O: Supraglenoid tubercle, Coracoid process of the scapula
I: Radial tuberosity
Brachialis
O: Distal have of the humerus, anterior surface
I: Coronoid process and ulnar tuberosity o the ulna
Bachioradialis
O: Lateral supracondylar ridge on the humerus
I: Styloid process of radius
Triceps
O: Infraglenoid tubercle of the scapula, inferior to the greater tubercle on posterior humerus, posterior surface of the humerus
I: Olecranon process of the ulna
