Hand Flashcards
Origin of abductor pollicis brevis
flexor retinaculum
trapezium
scaphoid tubercles
insertion of abductor pollicis brevis
base of proximal phalanx of thumb
action of abductor pollicis brevis
abduct the thumb
assist in opposition of the thumb
innervation of abductor pollicis brevis
median nerve C6 - T1
Origin of flexor pollicis brevis
superficial head - flexor retinaculum
deep head - trapezium, trapezoid and capitate
insertion of flexor pollicis brevis
base of proximal phalanx of thumb
action of flexor pollicis brevis
flex the thumb
assist in opposition of the thumb
innervation of flexor pollicis brevis
superficial head - median nerve C6 - T1
deep head - ulnar nerve C8 - T1
origin of opponens pollicis
flexor retinaculum and tubercle of the trapezium
insertion of opponens pollicis
entire length of 1st metacarpal bone, radial surface
action of opponens pollicis
opposition of the thumb at the carpometacarpal joint
innervation of opponens pollicis
median nerve C6 - T1
origin of adductor pollicis
capitate, second and third metacarpals
insertion of adductor pollicis
base of proximal phalanx of thumb
action of adductor pollicis
adduct the thumb
assist to flex the thumb
innervation of adductor pollicis
ulnar nerve C8 - T1
origin of abductor digiti minimi
Pisiform and tendon of flexor carpi ulnaris
insertion of abductor digiti minimi
base of proximal phalanx of 5th finger, ulnar surface
action of abductor digiti minimi
abduct the 5th finger
assist in opposition of the 5th finger toward the thumb
innervation of abductor digiti minimi
ulnar nerve C7 - T1
origin of flexor digiti minimi brevis
hook of hamate and flexor retinaculum
insertion of flexor digiti minimi brevis
base of proximal phalanx of 5th finger, palmar surface
action of flexor digiti minimi brevis
flex the 5th finger, assist in opposition of 5th finger toward the thumb
innervation of flexor digiti minimi brevis
ulnar nerve C7 - T1
origin of opponens digiti minimi
hook of hamate and flexor retinaculum
insertion of opponens digiti minimi
shaft of 5th metacarpal, ulnar surface
action of opponens digiti minimi
opposition of the 5th finger at the carpometacarpal joint
innervation of opponens digiti minimi
ulnar nerve C7 - T1
origin of lumbricals
surface of the flexor digitorum profundus tendons
insertion of lumbricals
extensor aponeurosis on dorsal surface of phalanges 2 - 5
action of lumbricals
extend the 2nd through 5th fingers at the interphalangeal joints
flex the second through 5th fingers at the metacarpophalangeal joint
innervation of lumbricals
2nd and 3rd fingers - median nerve C6 - T1
4th and 5th fingers - ulnar nerve C7 - T1
origin of palmar interossei
base of 1st, 2nd, 4th and 5th metacarpal
insertion of palmar interossei
base of proximal phalanx of the related finger and extensor aponeurosis
action of palmar interossei
adduct the thumb, second, fourth and 5th fingers toward the third finger
assist to flex the thumb, 2nd, 4th and 5th fingers at the metacarpophalangeal and extend them at the interphalangeal joints
origin of dorsal interossei
adjacent sides of all metacarpals
insertion of dorsal interossei
base of the proximal phalanx of the 2nd, 3rd and 4th fingers and the extensor aponeurosis
action of dorsal interossei
abduct the 2nd, 3rd, 4th fingers at the metacarpophalangeal joints
assist to flex the 2nd, 3rd and 4th fingers at the metacarpophalangeal and extend at the interphalangeal joints
innervation of dorsal interossei
ulnar nerve C8 - T1
