muscles of the arm, forearm, and hand

biceps brachii action

flex elbow, powerful supinator of forearm; long head flexes GH joint

biceps brachii origin

long head: supraglenoid tubercle of scapula

short head: coracoid process of scapula

biceps brachii insertion

radial tuberosity and bicipital aponeurosis

biceps brachii innervation

musculocutaneous nerve

brachialis action

primary flexor of elbow

brachialis innervation

musculocutaneous nerve

brachioradialis action

flex elbow

brachioradialis insertion

styloid process of radius

brachioradialis innervation

radial nerve

triceps brachii action

primary extensor of elbow; long head also extend GH joint

triceps brachii origin

long head: infraglenoid tubercle of scapula

triceps brachii insertion

olecranon process of ulna

triceps brachii innervation

radial nerve

pronator teres action

pronate forearm

pronator teres origin

medial epicondyle of humerus

pronator teres innervation

median nerve

flexor carpi radialis action

flex wrist and abduct hand

flexor carpi radialis origin

medial epicondyle of humerus

flexor carpi radialis innervation

median nerve

palmaris longus actioni

weak wrist flexor

palmaris longus origin

medial epicondyle of humerus

palmaris longus innervation

median nerve

flexor carpi ulnaris action

flex wrist and adduct hand

flexor carpi ulnaris origin

medial epicondyle of humerus

flexor carpi ulnaris innervation

ulnar nerve

flexor digitorum superficialis action

flex wrist, 2-5 MP and PIP

flexor digitorum superficialis origin

medial epicondyle of humerus

flexor digitorum insertion

middle phalanges 2-5

flexor digitorum innervation

median nerve

flexor pollicic longus action

flex MP and IP of thumb

flexor pollicis longus insertion

distal phalanx of thumb

flexor pollicis longus innervation

median nerve

flexor digitorum profundus action

flex wrist, 2-5 MP, PIP, and DIP

flexor digitorum profundus insertion

distal phalanges of 2-5

flexor digitorum profundus innervation

lat 1/2: median nerve

med 1/2: ulnar nerve

pronator quadratus action

pronates forearm

pronator quadratus innervation

median nerve

extensor carpi radialis longus action

extend wrist, abduct hand

extensor carpi radialis longus innervation

radial nerve

extensor carpi radialis brevis action

extend wrist, abduct hand

extensor carpi radialis brevis origin

lateral epicondyle of humerus

extensor carpi radialis brevis innervation

radial nerve

extensor digitorum action

extend wrist, 2-5 MP, PIP, and DIP

extensor digitorum origin

lateral epicondyle of humerus

extensor digitorum insertion

digits 2-5

extensor digitorum innervation

radial nerve

extensor digiti minimi action

extend wrist, MP, and PIP of finger 5

extensor digiti minimi origin

lateral epicondyle of humerus

extensor digiti minimi insertion

finger 5

extensor digit minimi innervation

radial nerve

extensor carpi ulnaris action

extend wrist, adduct hand

extensor carpi ulnaris origin

lateral epicondyle of humerus

extensor carpi ulnaris innervation

radial nerve

abductor pollicis longus action

abduct thumb

abductor pollicis longus innervation

radial nerve

extensor pollicis brevis action

extend MP of thumb

extensor pollicis brevis insertion

thumb

extensor pollicis brevis innervation

radial nerve

extensor pollicis longus action

extend MP and IP of thumb

extensor pollicis longus insertion

thumb

extensor pollicis longus innervation

radial nerve

extensor indicis action

extend MP, PIP, and DIP of finger 2

extensor indicis insertion

2nd finger

extensor indicis innervation

radial nerve

supinator action

supinate forearm

supinator origin

lateral epicondyle of humerus

supinator innervation

radial nerve

flexor pollicis brevis action

flex thumb

flexor pollicis brevis innervation

median nerve

abductor pollicis brevis action

abduct thumb

opponens pollicis action

oppose thumb

opponens pollicis innervation

median nerve

flexor digiti minimi brevis action

flex finger 5

flexor digiti minimi brevis innervation

ulnar nerve

abductor digiti minimi action

abduct finger 5

abductor digit minimi innervation

ulnar nerve

opponens digiti minimi action

oppose finger 5

opponens digiti minimi innervation

ulnar nerve

lumbricals action

flex MP, extend PIP and DIP of 2-5

lumbricals innervation

lat 2: median nerve

med 2: ulnar nerve

dorsal interossei action

abduct 2-5

dorsal interossei innervation

ulnar nerve

palmar interossei action

adduct 2-5

palmar interossei innervation

ulnar nerve

adductor pollicis action

adduct thumb

adductor pollicis innervation

ulnar nerve