Muscles of the Forelimb (O/I/A) Flashcards
Pronator teres
O: Medial epicondyle of humerus
I: Lateral Radius
A: Pronate forearm
Flexor carpi radialis
O: Medial epicondyle of humerus
I: 2nd, 3rd metcarpals
A: Hand flexor
Palmaris longus
O: Medial epicondyle of humerus
I: Fascia of palm
A: Tenses skin of palm fascia
Flexor carpi ulnaris
O: Medial epicondyle of humerus
I: Pisiform and Hamate bone
A: Flexes hand and middle phalanges
Flexor digitorum superficialis
O: Medial epicondyle of humerus
I: Middle phalanges
A: Flex hand and middle phalanges
Flexor digitorum longus
O: Anterior radius and interserous membrane
I: Distal phallanx of thumb
A: Flexes distal phalanx of thumb
Flexor digitorum profundus
O: Medial surface of ulna
I: 4 tendons of phalanges
A: Flexes distal interphalangeal joints
Pronator quadratus
O: Distal anterior ulnar shaft
I: Distal surface of anterior radius
A: Forearm pronation
Extensor carpi radialis longus
O: Lateral supercondylar ridge of humerus
I: Base of second metacarpal
A: Extend and abduct hand
Extensor carpi radialis brevis
O: Lateral epicondyle of humerus
I: Base of third metacarpal
A: Extend and abduct hand
Extensor digitorum
O: Lateral epicondyle of humerus
I: Distal phalanges
A: Finger extension
Extensor carpi ulnaris
O: Lateral epicondyle of humerus and posterior border of ulna
I: Base of fifth metacarpal
A: Extend and abduct hand
Extensor pollicis and brevis
O: Dorsal shaft and radius and ulna
I: Phalanx of thumb
A: Abduct and extend thumb
Abductor pollicis longus
O: Dorsal shaft of radius and ulna
I: Base of first metacarpal and trapezium
A: Extend thumb
Supinator
O: Lateral epicondyle of humerus and proximal ulna
I: Proximal end of radius
A: Supinate forearm
