forearm wrist hand muscles Flashcards
Flexor carpi radialis (superficial)
O: common flexor tendon
I: base of 2 and 3 metacarpals
N: median, C678
A: flexes and radially deviates wrist
assists in pronation and elbow flexion
Flexor carpi ulnaris (2 insertions) (superfical)
O: humeral head: common flexor tendon
unlar head: medial olecranon
I: pisiform, hammate and 5th metacarpal
N: ULNAR C78T1
A: flexes and ulnarly deviates wrist
palmaris longus (superficial)
O: common flexor tendon
I:flexor retinaculum and palmar aponeurosis
N: median, C678T1
A: tenses palmar facsia and flexes wrist
flexor digitorum superficialis (3 insertions) (superficial)
O:humeral: common flexor tendon
ulnar head: coronoid process
radius: radial head
N: median C7,8,T1
I: 4 tendons from 2-5 middle phalanges
A:flexes proximal IP joint 2-5 digits
flexor digitorum profundus (deep) 2 nerve insertions
O: ulna anterior+medial
I: 4 tendons base of 2-5 distal phalanges
N: median 2-3 digits anteior interosseous branch
ulnar 4-5 digits
C7,8,T1
A: flexes distal IP jonts of digits 2-5
flexor pollicis longus (deep)0
O: radius anterior
I: base of palmar distal phalanx of thumb
A:flexes thumb IP joint
N:median anteior interosseous branch C6,7,8T1
extensor carpi radialis longus
O: distal humerus, supracondylar ridge
I:dorsal base of 2 metacarpal
A:exends adn radially deviates wrists
I: radial C6,7,8
extensor carpi radialis brevis
O:common extensor tendon
I:dorsal of 3rd metacarpal
A: extends wrist
N: radial posterior interosseous branch C6,7,8
extensor carpi ulnaris
O: common extensor tendon
I: base of pinky metacarpal
A: extends and ulnarly deviates
N:radial C6,7,8
extensor digitorum
O:common extensor tendon
I: 4 tendons into the middle and distal phalanx 2-3
A: extends digits 2-5
N: radial posteior interosseous branch
C6,7,8
extensor digiti minimi
O:common extensor tendon
I: extension expansion of pinky with ED
A: extends MCP and IP joints of pinky
N: radial, posteior interosseous branch C6,7,8
ig
abductor pollicis longus
O:posterior ulna + posteior middle radius
I: base of metacarpal - dorsal side
A: Extends OP of thumb
N:radial posteior interosseous branch C6,7,8
extensor pollicis brevis
O:posterior distal radius
I: base of proximal phalax of thumb
A: extends MCP joint of thumb, extends and abducts CMC joint
N: radial, post. interosseous branch C6,7,8
extensor indicis
O: posterior +distal ulna
I: extensor expansion of index finger
A: extends all joint of index finger
N: radial, posterior interosseous branch
C6,7,8
abductor pollicis longus
O: flexor retinaculum
and trapezoid
I: palmar base of thumb extensor expansion
A: abducts CMC and MCP joints of thumb
N: median C6,7,8,T1
flexor pollicis brevis (2 heads, 2 nerve insertions)
superficial H: trapezium and flexor retinaculum
Deep H: Trapezoid and capitate
I:base of thumb extensor expansion
A: flexes MCP and CMC thumb joint
I: Median for superficial head C6,7,8,T1
I:Ulnar for deep head C8,T1
Opponens pollicis
flexor retinaculum and trapezium
I:entire radial side of first metacarpal
A:opposes thumb CMC joint
N:median C6,7,8,T1
adductor pollicis
I:oblique fibers: Capitate and baess of 2 and 3 metacarpals
transverse fibers: 3 metacarpal palmar side
I:oblique extensor expansion
transverse: base of proximal phalanx of thumb
A: adducts CMC joint, adductos adn flexes MCP joint of thumb
N: ulnar C8,T1
abductor digiti minimi
I:tendon of FCU and pisiform
O: base of pinky +extensor expansion
I: Abducts MCP joint
N:ulnar C7,8,T1
flexor digiti minimi brevis
hamate and flexor retinaculum
I: base of proximal of phalanx of pinky
A: flexs MCP joint of pinky
N:nerve C7,8,T1
opponens digiti minimi
hamate and flexor retinaculum
:base of proximal phalanx of pinky
A:flexes joint of pinky
N: ulnar C7,8,T1
Opponens digiti minimi
O: hamate and flexor retinaculum
I:entire length of 5th metacarpal
A: opposes pinky of CMC joint
N: ulnar C7,8, T1
Dorsal interossei
O: metacarpals
I: extensor expansion and base of proximal phalanx
A: abducts 2-5 digits
N:ulnar C8, T1
Palmar interossei
O: metacarpals
I: extensor expansion and base of proximal phalanx
A: adducts 2-5 digits
N: ulnar C8, T1
