moina forearm, wrist and hand Flashcards
(37 cards)
pronator teres
O: Humeral: Medial epicondyle of humerus
Ulnar: Medial border of coronoid process of ulna
I: Lateral aspect of shaft of radius
N: Median nerve
A: Pronates and flexes the arm
flexor carpi radialis
O: Medial epicondyle of humerus
I: Bases of second and third metacarpal bones
N: Median nerve
A: flexes and abducts the hand at wrist joint
palmaris longus
O: Medial epicondyle of humerus
I: Flexor retinaculum and palmar aponeurosis
N: Median nerve
A: Flexes hand
flexor carpi ulnaris
O: Humeral: Medial epicondyle of humerus
Ulnar: Medial border of coronoid process of ulna
I: Pisiform bone, hook of the hamate, base at fifth metacarpal bone
N: Ulnar nerve
A: Flexes and adducts hand at wrist joint
flexor digitorum superficialis
O: Humeroulnar: Medial epicondyle of humerus; medial border of coronoid process of ulna
Radial: Oblique line on anterior surface of shaft of radius
I: Middle phalanx of medial four fingers
N: Median nerve
A: Flexes middle phalanx of fingers and assists in flexing proximal phalanx and hand
FLEXOR POLLICIS LONGUS
O: Anterior surface of shaft of
radius
I: Distal phalanx of thumb
N: Anterior interosseous
branch of median nerve
A: Flexes distal phalanx of
thumb
FLEXOR DIGITORUM
PROFUNDUS
O: Anteromedial surface of
shaft of ulna
I: Distal phalanges of medial
four fingers
N: Ulnar (medial half) and
median (lateral half)
nerves
A: Flexes distal phalanx of
fingers; then assists in
flexion of middle and
proximal phalanges and
wrist
PRONATOR QUADRATUS
O: Anterior surface of shaft of
ulna
I: Anterior surface of shaft of
radius
N: Anterior interosseous
branch of median Nerve
A: Pronates forearm
BRACHIORADIALIS
O: Lateral supracondylar ridge of
humerus
I: Base of styloid process of
radius
N: Radial nerve
A: Flexes forearm at elbow joint;
rotates forearm to the
midprone position
EXTENSOR CARPI RADIALIS LONGUS
O: Lateral supracondylar ridge of humerus
I: Posterior surface of base of second metacarpal bone
N: Radial nerve
A: Extends and abducts hand at wrist joint
EXTENSOR CARPI RADIALIS BREVIS
O: Lateral epicondyle of humerus
I: Posterior surface of base of third metacarpal bone
N: Deep branch of radial nerve
A: Extends and abducts hand at wrist joint
EXTENSOR DIGITORUM
O: Lateral epicondyle of humerus
I: Middle and distal phalanges of medial four fingers
N: Deep branch of radial nerve
A: Extends fingers and hand
EXTENSOR DIGITI MINIMI
O: Lateral epicondyle of humerus
I: Extensor expansion of little finger
N: Deep branch of radial nerve
A: Extends MCP joint of little finger
EXTENSOR CARPI ULNARIS
O: Lateral epicondyle of humerus
I: Base of 5th metacarpal bone
N: Deep branch of radial nerve
A: Extends and adducts hand at wrist joint
ANCONEUS
O: Lateral epicondyle of humerus
I: Lateral surface of olecranon process of ulna
N: Radial nerve
A: Extends elbow joint
SUPINATOR
O: Lateral epicondyle of humerus, annular ligament of proximal radioulnar joint, and
ulna
I: Neck and shaft of radius
N: Deep branch of the radial nerve
A: Supination of forearm
EXTENSOR INDICIS
O: Posterior surface of shaft of ulna
I: Extensor expansion of index finger
N: Deep branch of the radial nerve
A: Extends metacarpophalangeal
joint of index finger
ABDUCTOR POLLICIS LONGUS
O: Posterior surface of shafts of radius and ulna
I: Base of first metacarpal bone
N: Deep branch of the radial nerve
A: Abducts and extends thumb
EXTENSOR POLLICIS BREVIS
O: Posterior surface of shafts of radius
I: Base of proximal phalanx of thumb
N: Deep branch of the radial nerve
A: Extends metacarpophalangeal joints of thumb
EXTENSOR POLLICIS LONGUS
O: Posterior surface of shafts of ulna
I: Base of distal phalanx of thumb
N: Deep branch of the radial nerve
A: Extends distal phalanx of thumb
PALMARIS BREVIS
O: Flexor retinaculum, palmar aponeurosis
I: Skin of palm
N: Superficial branch of ulnar nerve
A: Corrugates skin to improve grip of palm
LUMBRICALS (4)
O: Tendons of FDP
I: Extensor expansion of medial four fingers
N: 1st and 2nd, (i.e., lateral two) median nerve; 3rd and 4th deep branch of ulnar nerve
A: Flex MCP and extend IP of fingers except thumb
PALMAR INTEROSSEI
O: First arises from base of 1st metacarpal; remaining three from anterior surface of shafts of 2nd, 4th, and 5th metacarpals
I: Proximal phalanges of thumb and index, ring, and little fingers and dorsal extensor expansion of each finger
N: Deep branch of ulnar nerve
A: Dorsal interossei abduct fingers from center of third finger; both palmar and dorsal flex MCP joints and extend IP joints
DORSAL INTEROSSEI
O: Contiguous sides of shafts of metacarpal bones
I: Proximal phalanges of index, middle, and ring fingers and dorsal extensor expansion
N: Deep branch of ulnar nerve
A: Flex MCP and extend IP of fingers except thumb
