Lab Exam 1 Flashcards
Pectoralis Minor
O: Ribs 3,4,5
I: Coracoid Process of Scapula
A: Protracts and Depresses Scapula; elevates ribs
Serratus Anterior
O: ribs 1-8
I: Medial border of scapula
A: fixates and retracts scapula; elevates ribs
Trapezius
O: Occipital bone; spines of thoracic vertebrae
I: Acromion and spine of scapula; clavicle
A: elevates, retracts, and rotates scapula
Rhomboideus major and minor
O: Spinous process of C7-T5
I: Medial border of scapula
A: fixates scapula
Supraspinatus
O: Supraspinous fossa of scapula
I: Greater Tubercle of Humerus
A: Stabilizes Shoulder
infraspinatus
O: Infraspinous fossa of scapula
I: greater tubercle of humerus
A: stabilizes shoulder
Subscapularis
O: sub scapular fossa of scapula
I: lesser tubercle of humerus
A: stabilizes shoulder
Teres minor
O: lateral border of scapula
I: greater tubercle of humerus
A: stabilizes shoulder
Teres Major
O: inferior angle of scapula
I: lesser tubercle of humerus
A: extends, medially rotates, and adducts arm
Pectoralis major
O: sternum and upper costal cartilages
I: intertubercular groove of humerus
A: flexes and adducts arm
Latissimus dorsi
O: lower thoracic and lumbar vertebrae
I: intertubercular groove of humerus
A: primary extensor of arm
deltoid
O: spine of scapula
I: deltoid tuberosity of humerus
A: primary abductor of arm
triceps brachii
O: infraglenoid tubercle of scapula; proximal humerus
I: olecranon process of ulna
A: extend arm
biceps brachii
O: coracoid process of the scapula; supraglenoid tubercle of scapula
I: radial tuberosity
A: flexes forearm; supinates forearm
brachialis
O: anterior surface of distal humerus
I: coronoid process of ulna
A: flexes forearm
