Muscles of the Hand!!
action of lumbricals (2)
- Flex at MCP of digits 2-5 - extend at IP joints at digits 2-5
origin of adductor pollicis (3)
- capitate - 2nd and 3rd metacarpals
actions of extensor carpi radialis brevis and longus (3)
- extends wrist - abducts wrist - radially deviates wrist
actions of extensor digitorum (2)
- extension of wrist - extension/abduction of digits 2-5
action of extensor digiti minimi (2)
- extension of wrist and all joints - extension of 5th digit (pinky)
actions of flexor digitorum profundus
- flexes wrist - flexes distal phalanx of digits 2-5
action of palmaris longus (2)
- flexes wrist - tenses palmar fascia
Origin of Abductor Pollicis Brevis (3)
- flexor retinaculum - scaphoid - trapezium
origin of pronator teres (2)
- medial epicondyle of humerus - coronoid process of ulna
insertion of flexor carpi ulnaris (3)
- pisiform - hook of hamate - base of 5th metacarpal
origin of opponens pollicis (3)
- scaphoid - trapezium - flexor retinaculum
Origin of Flexor Pollicis Brevis
- trapezium - capitate - trapezoid
what is radial deviation?
Abduction of the wrist in the frontal plane
insertion of flexor digitorum profundus
Base of distal phalanx of digits 2-5
action of extensor pollicis brevis
Extends thumb at carpometacarpal joint and metacarpophalangeal joint
action of opponens pollicis
Opposition of thumb at CMC joint
insertion of extensor indicis
Posterior digital expansion of 2nd digit (index finger)
origin of extensor pollicis longus (2)
Posterior surface of middle third of ulna and interosseous membrane
origin of extensor pollicis brevis
Posterior surface of radius and interosseous membrane
origin of extensor indicis (2)
Posterior surface of ulna and interosseous membrane
innervation of palmar interossei
Ulnar nerve
action of dorsal interossei
abduction of digits 2-4 at MCP joint
action of abductor digiti minimi
abducts 5th digit with MCP joint
action of abductor pollicis longus
abducts and extends thumb at carpometacarpal joint
action of abductor pollicis brevis
abducts thumb at CMC joint and MCP joint
action of palmar interossei
adduct digits 2, 4, and 5 at MCP joint
action of adductor pollicis
adducts and flexes thumb at CMC and MCP joints
origin of flexor pollicis longus (2)
anterior surface of radius and interosseous membrane
insertion of abductor pollicis longus
base of 1st metacarpal
insertion of flexor carpi radialis
base of 2nd and 3rd metacarpals
insertion of extensor carpi radialis longus
base of 2nd metacarpal
insertion of extensor carpi radialis brevis
base of 3rd metacarpal
insertion of extensor pollicis longus
base of distal phalanx of thumb
insertion of flexor pollicis longus
base of distal phalanx of thumb
insertion of extensor carpi ulnaris
base of fifth metacarpal
Insertion of Abductor Pollicis Brevis
base of proximal phalanx of digit 1 (thumb)
insertion of flexor digit minimi brevis
base of proximal phalanx of digit 5
insertion of extensor pollicis brevis
base of proximal phalanx of thumb
action of extensor carpi ulnaris (2)
extends and adducts wrist (ulnar deviation)
action of extensor pollicis longus
extends thumb at the MCP, ICP, and CMC joint of the thumb
action of extensor indicis
extension of the joint of index finger
insertion of extensor digiti minimi
extensor expansion of the fifth digit
action of flexor pollicis brevis
flexes MCP and CMC of thumb
action of flexor carpi ulnaris
flexes and adducts hand at wrist
action of flexor digitorum superficialis
flexes digits 2-5 and flexes wrist
action of flexor pollicis longus
flexes distal phalanx of thumb, wrist, and all 3 joints
action of flexor carpi radialis (2)
flexion and abduction of wrist (radial deviation)
action of flexor digit minimi brevis
flexion at MCP for digit 5
origin of flexor digit minimi brevis (2)
flexor retinaculum and hook of hamate
origin of opponens digiti minimi (2)
flexor retinaculum and hook of hamate
insertion of palmaris longus (2)
flexor retinaculum and palmar aponeurosis (fascia)
innervation of lumbricals
lateral 2: median nerve medial 2: ulnar nerve
insertion of opponens pollicis
lateral border of 1st metacarpal
Origin of extensor carpi radialis longus and brevis
lateral epicondyle of humerus
origin of extensor digiti minimi
lateral epicondyle of humerus
origin of extensor digitorum
lateral epicondyle of humerus
origin of supinator
lateral epicondyle of humerus
origin of extensor carpi ulnaris (2)
lateral epicondyle of humerus and posterior border of ulna
insertion of abductor digiti minimi
lateral side of base of proximal phalanx of 5th digit
insertion of pronator teres
lateral surface of radius
insertion of supinator
lateral surface of radius
insertion of opponens digiti minimi
medial border of 5th metacarpal
origin of flexor carpi radialis
medial epicondyle of humerus
origin of flexor carpi ulnaris
medial epicondyle of humerus
origin of palmaris longus
medial epicondyle of humerus
origin of flexor digitorm superficialis
medial epicondyle of humerus and radius
insertion of adductor pollicis
medial side of base of proximal phalanx of thumb
innervation of flexor pollicis brevis
median and ulnar nerve
innervation of flexor digitorum profundus
median and ulnar nerves
innervation of abductor pollicis brevis
median nerve
innervation of flexor carpi radialis
median nerve
innervation of flexor digitorum superficialis
median nerve
innervation of flexor pollicis longus
median nerve
innervation of opponens pollicis
median nerve
innervation of palmaris longus
median nerve
innervation of pronator teres
median nerve
insertion of extensor digitorum
middle and distal phalanges of fingers 2-5
insertion of flexor digitorum superficialis
middle phalanges of digits 2-5
action of opponens digiti minimi
opposition/flexion of digit 5 at CMC joint
origin of abductor digiti minimi
pisiform
action of pronator teres
pronates forearm
Innervation of extensor digiti minimi
radial nerve
innervation of abductor pollicis longus
radial nerve
innervation of extensor carpi radialis longus and brevis
radial nerve
innervation of extensor carpi ulnaris
radial nerve
innervation of extensor digitorum
radial nerve
innervation of extensor indicis
radial nerve
innervation of extensor pollicis longus and brevis
radial nerve
innervation of supinator
radial nerve
insertion of flexor pollicis brevis
radial side of base of proximal phalanx of thumb
insertion of lumbricals
radial side of extensor expansion of extensor digitorum
origin of abductor pollicis longus
radius and ulna
action of supinator
supinates forearm
origin of lumbricals
tendons of flexor digitorum profundus
origin of flexor digitorum profundus
ulna and interosseous membrane
Innervation of adductor pollicis
ulnar nerve
innervation of abductor digiti minimi
ulnar nerve
innervation of dorsal interossei
ulnar nerve
innervation of flexor carpi ulnaris
ulnar nerve
innervation of flexor digit minimi brevis
ulnar nerve
innervation of opponens digiti minimi
ulnar nerve
