all of upper body muscles

anatomy 2300

brachioradialis Muscle

• superficial posterior forearm muscle

• crosses the elbow

• radial N.

• flex elbow

extensor carpi radialis longus muscle

• superficial posterior forearm muscle

• crosses the wrist

• radial N.

• extend wrist

• abduct wrist

extensor carpi radialis brevis muscle

• superficial posterior forearm muscle

• crosses the wrist

• radial N.

• extend wrist

• abduct wrist

extensor digitorum muscle

• superficial posterior forearm muscle

• crosses the wrist and digits 2 to 5

• radial N.

• extend wrist

• extend digits 2 to 5

extensor digiti minimi muscle

• superficial posterior forearm muscle

• crosses the wrist and digit 5

• radial N.

• extend wrist

• extend digit 5

extensor carpi ulnaris muscle

• superficial posterior forearm muscle

• crosses the wrist

• radial N.

• extend wrist

• adduct wrist

anconeus muscle

• superficial posterior forearm muscle

• crosses the elbow

• radial N.

• extend elbow

supinator muscle

• deep posterior forearm muscle

• crosses the radioulnar

• radial N.

• supinate forearm

abductor pollicis longus muscle

• deep posterior forearm muscle

• crosses the pollex

• radial N.

• extends pollex

• abduct pollex

extensor pollicis brevis muscle

• deep posterior forearm muscle

• crosses the pollex

• radial N.

• extend pollex

extensor pollicis longus muscle

• deep posterior forearm muscle

• crosses the pollex

• radial N.

• extend pollex

extensor indicis muscle

• deep posterior forearm muscle

• crosses digit 2

• radial N.

• extend digit 2

abductor digiti mini Muscle

• hand muscle

• crosses digit 5

• ulnar N.

• abduct digit 5

flexor digiti minimi brevis muscle

• hand muscle

• crosses digit 5

• ulnar N.

• flex digit 5

opponens digit minimi Muscle

• hand muscle

• crosses digit 5

• ulnar N.

• oppose digit 5

• flex digit 5

• abduct digit 5

• rotate digit 5

abductor pollicis brevis muscle

• hand muscle

• crosses the pollex

• median N.

• abduct pollex

flexor pollicis brevis muscle

• hand muscle

• crosses the pollex

• median N.

• flex pollex

oppenens pollicis muscle

• hand muscle

• crosses the pollex

• median N.

• opposes pollex

• rotates pollex

• flex pollex

• abduct pollex

lumbrical muscle

• hand muscle

• crosses digits 2 to 5

• two innervation

• medial N: control lumbricals 1 to 2

• ulnar N: control lumbricals 3 to 4

• extend digit 2 to 5

• flex digit 2 to 5

adductor pollicis muscle

• hand muscle

• crosses the pollex

• ulnar N.

• adduct pollex

palmar interosseous muscle

• hand muscle

• crosses digits 2 to 5

• ulnar N.

• adduct digits 2 to 5

dorsal interosseous muscle

• hand muscle

• crosses digits 2 to 5

• ulnar N.

• abduct digits 2 to 5

coracobrachialis muscle

• anterior arm muscle

• crosses the shoulder

• musculocutaneous N.

• flex the arm and shoulder

• adducts the arm and shoulder

biceps brachii muscle

• anterior arm muscle

• crosses the shoulder, elbow, and radioulnar joints

• musculocutaneous N.

• two parts: short head and long head

• flex forearm during supinated position

• supinates forearm

• slight arm and shoulder flexion
  

brachialis muscle

• anterior arm muscle

• crosses the elbow

• musculocutaneous N.

• flexes the forearm

triceps brachii muscle

• posterior arm muscle

• crosses the elbow

• radial N.

• three parts: long head, lateral head, and medial head

• extend the forearm

• extend the arm (long head only)

supraspinatus muscle

• rotator cuff muscle

• crosses the shoulder

• abduct the arm and shoulder

• SItS

infraspinatus muscle

• rotator cuff muscle

• crosses the shoulder

• laterally rotates arm and shoulder

• SItS

subscapularis muscle

• rotator cuff muscle

• crosses the shoulder

• medially rotates arm

• SItS

teres minor muscle

• rotator cuff muscle

• crosses the shoulder

• laterally rotates arm and shoulder

• axillary N.

• SItS

teres major muscle

• is not a rotator cuff muscle

• crosses the shoulder

• adduct the arm and shoulder

• medially rotates arm and shoulder

deltoid muscle

• not part of the rotator cuff muscle

• crosses the shoulder

• axillary N.

• three parts

• anterior part: flexes the arm and shoulder, medially rotates arm and should

• middle part: abduct the arm and shoulder

• posterior part: extend the arm and shoulder, laterally rotates the arm and shoulder

pectoralis major muscle

• humerus muscle

• crosses the shoulder

• adducts arm and shoulder

• medially rotates arm and shoulder

latissimus dorsi muscle

• humerus muscle

• crosses the shoulder

• thoracodorsal N.

• adducts arm and shoulder

• extends arm and shoulder

• medially rotates arm and shoulder

N/A

N/A

N/A

N/A

trapezius Muscle

• posterior pectoral gridle muscle

• crosses the shoulder

• elevate shoulder

• retracts shoulder

• depresses shoulder

levator scapulae muscle

• posterior pectoral girdle muscle

• crosses the scapula

• elevates scapula

Rhomboid minor muscle

• posterior pectoral girdle muscle

• crosses the shoulder

• retract shoulder

Rhomboid major muscle

• posterior pectoral girdle muscle

• crosses the shoulder

• retracts shoulder

serratus anterior muscle

• anterior pectoral girdle muscle

• crosses the shoulder

• long thoracic n.

• protracts shoulder

• holds scapula against thoracic wall

• rotates shoulder

pectoralis minor muscle

• anterior pectoral gridle

• medial pectoral N.

• crosses the scapula

• protracts scapula

• elevates ribs during inhalation

pronator teres muscle

• superficial anterior forearm

• crosses the elbow and radioulnar joint

• median N.

• pronates forearm

• flex elbow

flexor carpi radialis muscle

• superficial anterior forearm muscle

• crosses the wrist

• median N.

• flex wrist

• abduct wrist

palmaris longus muscle

• superficial anterior forearm muscle

• crosses the wrist

• median N.

• flex wrist

flexor carpi ulnaris muscle

• superficial anterior forearm muscle

• crosses the wrist

• ulnar N.

• flexes wrist

• adducts wrist

flexor digitorum superficialis muscle

• superficial anterior forearm muscle

• crosses the wrist and digits 2 to 5

• median N.

• flexes digits 2 to 5

• flex the wrist

flexor digitorum profundus muscle

• deep anterior forearm muscle

• crosses the wrist and digits 2 to 5

• two innervations

• medial N: controls digits 2 to 3

• ulnar N: controls digits 4 to 5

• flex digits 2 to 5

• flex wrist

flexor pollicis longus muscle

• deep anterior forearm muscle

• crosses the wrist and pollex

• median N.

• flex the pollex

• flex the wrist

pronator quadratus muscle

• deep anterior forearm muscle

• crosses the radioulnar

• median N.

• pronate forearm