muscles of the upper limb, shoulder, elbow, wrist and digits

Supraspinatus

What does the supraspinatus do?

Abducts arm; holds head of humerus in glenoid cavity

Infraspinatus

What does the infraspinatus do?

Lateral rotation of arm; holds head of humerus in glenoid cavity

Subscapularis

What does subscapularis do?

Medial rotation of arm; holds head of humerus in glenoid cavity

Teres major

What does teres major do?

Medial rotation of arm; adduction of arm; extension of arm

Teres minor

What does teres minor do?

Lateral rotation of arm; holds head of humerus in glenoid cavity; weak adduction of arm

Latissimus dorsi

What does latissimus dorsi do?

Adducts, extends and medially rotates arm

Trapezius

What does trapezius do?

Elevates scapula; superior rotation of scapula (glenoid cavity directed superiorly)

Pectoralis major

What does pectoralis major do?

Adducts and medially rotates arm; clavicular part flexes arm and sternocostal part extends arm

Serratus anterior

What does serratus anterior do?

Protracts scapula; superior rotation of scapula; stabilizes scapula

Pectoralis minor

What does pectoralis minor do?

Holds scapula against thoracic wall; protraction of scapula; laterally rotates scapula

Rhomboid major

Rhomboid minor

What do the rhomboids do?

Retracts, elevates, downwardly rotate and stabilize scapula

Biceps brachii

What do the biceps brachii do?

Supinates and flexes forearm

Brachialis

What does brachialis do?

Flexes forearm

Deltoid

What does the deltoid do?

Flexion and medial rotation of arm; abducts arm; extends and laterally rotates arm

Triceps brachii

What do the triceps brachii do?

Extends forearm and long head of arm

Flexor carpi ulnaris

What does flexor carpi ulnaris do?

Flexes wrist; adducts hand

Flexor digitorum superficialis

What does flexor digitorum superficialis do?

Flexes fingers 2-5, assists in flexion of wrist and metacarpophalangeal joints

Palmaris longus

What does palmaris longus do?

Weak flexion of wrist; tense palmar aponeurosis

Flexor carpi radialis

What does flexor carpi radialis do?

Flexes wrist; abducts hand

Pronator teres

What does pronator teres do?

Pronates forearm

Brachioradialis

What does brachioradialis do?

Flexes forearm; assists in pronation and supination of forearm

Extensor carpi radialis longus

What does extensor carpi radialis longus do?

Extends wrist; abducts hand

Extensor digitorum

What does extensor digitorum do?

Extends fingers 2-5; assists in extension of wrist

Extensor carpi ulnaris

What does extensor carpi ulnaris do?

Extends wrist; adducts hand

Supinator

What does the supinator do?

Supinates forearm

Hypothenar

What does the hypothenar do?

Abduction, flexion and opposition of little finger

Intermediate palmar group

What does the intermediate palmar group do?

Pulls fingers together and assists with fine hand movements

Adductor pollicis

What does adductor pollicis do?

Adducts thumb

Thenar

What does the thenar do?

Abducts, flexes and opposes thumb

Abductor pollicis brevis

What does abductor pollicis brevis do?

Abducts thumb

Flexor pollicis brevis

What does flexor pollicis brevis do?

Flexes thumb