Hand

Question 1

Origin of abductor pollicis brevis

Answer 1

flexor retinaculum
trapezium
scaphoid tubercles

Question 2

insertion of abductor pollicis brevis

Answer 2

base of proximal phalanx of thumb

Question 3

action of abductor pollicis brevis

Answer 3

abduct the thumb

assist in opposition of the thumb

Question 4

innervation of abductor pollicis brevis

Answer 4

median nerve C6 - T1

Question 5

Origin of flexor pollicis brevis

Answer 5

superficial head - flexor retinaculum

deep head - trapezium, trapezoid and capitate

Question 6

insertion of flexor pollicis brevis

Answer 6

base of proximal phalanx of thumb

Question 7

action of flexor pollicis brevis

Answer 7

flex the thumb

assist in opposition of the thumb

Question 8

innervation of flexor pollicis brevis

Answer 8

superficial head - median nerve C6 - T1

deep head - ulnar nerve C8 - T1

Question 9

origin of opponens pollicis

Answer 9

flexor retinaculum and tubercle of the trapezium

Question 10

insertion of opponens pollicis

Answer 10

entire length of 1st metacarpal bone, radial surface

Question 11

action of opponens pollicis

Answer 11

opposition of the thumb at the carpometacarpal joint

Question 12

innervation of opponens pollicis

Answer 12

median nerve C6 - T1

Question 13

origin of adductor pollicis

Answer 13

capitate, second and third metacarpals

Question 14

insertion of adductor pollicis

Answer 14

base of proximal phalanx of thumb

Question 15

action of adductor pollicis

Answer 15

adduct the thumb

assist to flex the thumb

Question 16

innervation of adductor pollicis

Answer 16

ulnar nerve C8 - T1

Question 17

origin of abductor digiti minimi

Answer 17

Pisiform and tendon of flexor carpi ulnaris

Question 18

insertion of abductor digiti minimi

Answer 18

base of proximal phalanx of 5th finger, ulnar surface

Question 19

action of abductor digiti minimi

Answer 19

abduct the 5th finger

assist in opposition of the 5th finger toward the thumb

Question 20

innervation of abductor digiti minimi

Answer 20

ulnar nerve C7 - T1

Question 21

origin of flexor digiti minimi brevis

Answer 21

hook of hamate and flexor retinaculum

Question 22

insertion of flexor digiti minimi brevis

Answer 22

base of proximal phalanx of 5th finger, palmar surface

Question 23

action of flexor digiti minimi brevis

Answer 23

flex the 5th finger, assist in opposition of 5th finger toward the thumb

Question 24

innervation of flexor digiti minimi brevis

Answer 24

ulnar nerve C7 - T1

Question 25

origin of opponens digiti minimi

Answer 25

hook of hamate and flexor retinaculum

Question 26

insertion of opponens digiti minimi

Answer 26

shaft of 5th metacarpal, ulnar surface

Question 27

action of opponens digiti minimi

Answer 27

opposition of the 5th finger at the carpometacarpal joint

Question 28

innervation of opponens digiti minimi

Answer 28

ulnar nerve C7 - T1

Question 29

origin of lumbricals

Answer 29

surface of the flexor digitorum profundus tendons

Question 30

insertion of lumbricals

Answer 30

extensor aponeurosis on dorsal surface of phalanges 2 - 5

Question 31

action of lumbricals

Answer 31

extend the 2nd through 5th fingers at the interphalangeal joints flex the second through 5th fingers at the metacarpophalangeal joint

Question 32

innervation of lumbricals

Answer 32

2nd and 3rd fingers - median nerve C6 - T1 4th and 5th fingers - ulnar nerve C7 - T1

Question 33

origin of palmar interossei

Answer 33

base of 1st, 2nd, 4th and 5th metacarpal

Question 34

insertion of palmar interossei

Answer 34

base of proximal phalanx of the related finger and extensor aponeurosis

Question 35

action of palmar interossei

Answer 35

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

Question 36

origin of dorsal interossei

Answer 36

adjacent sides of all metacarpals

Question 37

insertion of dorsal interossei

Answer 37

base of the proximal phalanx of the 2nd, 3rd and 4th fingers and the extensor aponeurosis

Question 38

action of dorsal interossei

Answer 38

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

Question 39

innervation of dorsal interossei

Answer 39

ulnar nerve C8 - T1