BIOL 319 muscles and actions lab 5

Pectoralis major

Adducts, flexes and medially rotates arm

Latissimus dorsi

Adducts, extends and medially rotates arm

Deltoid

Abducts, flexes, and rotates arm medially and laterally

Trapezius

Adducts and rotates scapula; elevation and depression of scapula

Levator scapulae

Elevation of scapula, lateral neck flexion

Pectoralis minor

Stabilizes, abducts and rotates scapula

Subscapularis

Medial rotation of arm, stabilizes humerus head in glenoid cavity

Infraspinatus

Lateral rotation of arm, stabilizes humerus head in glenoid cavity

Supraspinatus

Abduction of arm, stabilizes humerus head in glenoid cavity

Teres minor

Lateral rotation and adduction of arm, stabilizes humerus head in glenoid cavity

Teres major

Medial rotation, adduction & extension of arm

Coracobrachialis

Flexion and adduction of arm

Biceps brachii

Supination and flexion of forearm

Brachialis

Flexion of forearm

Triceps brachii

Extension of forearm; stabilizes shoulder joint

Brachioradialis

Flexion of forearm; pronation of forearm (when supinated); supination of forearm (when pronated)

Flexor carpi radialis

Wrist flexion and hand abduction

Palmaris longus

Wrist flexion (weak)

Flexor carpi ulnaris

Wrist flexion and hand adduction

Pronator teres

Forearm pronation

Flexor pollicis longus

Flexion of thumb

Flexor digitorum profundus

Flexion of wrist and fingers (2-5)

Supinator

Supination of forearm

Extensor carpi radialis longus

Extension of wrist and abduction of hand

Extensor carpi radialis brevis

Extension of wrist and abduction of hand

Extensor digitorum

Extension of wrist and fingers (2-5)

Extensor carpi ulnaris

Extension of wrist; adduction of wrist

Abductor pollicis longus

Abduction and extension of thumb

Extensor pollicis longus

Extension of thumb