Hand

Question 1

origin palmaris brevis

Answer 1

flexor retinaculum + palmar aponeurosis

Question 2

insertion palmaris brevis

Answer 2

medial border of the palm

Question 3

action palmaris brevis

Answer 3

corrugates the skin of the hypothenar eminence to improve the grip of the palm

Question 4

innervation palmaris brevis

Answer 4

superficial branch of the ulnar nerve

Question 5

origin abductor pollics brevis

Answer 5

scaphoid, trapezium, and flexor retinaculum

Question 6

insertion abductor pollis brevis

Answer 6

base of the proximal phalanx of the thumb

Question 7

action abductor pollis brevis

Answer 7

abduction of the thumb at the carpometacarpal and metacarpophalangeal joints

Question 8

innervation abductor pollis brevis

Answer 8

recurrent branch of the median nerve

Question 9

origin flexor pollis brevis

Answer 9

flexor retinaculum and trapezium

Question 10

insertion flexor pollis brevis

Answer 10

base of the proximal phalanx of the thumb

Question 11

action flexor pollis brevis

Answer 11

flexion of the thumb at the carpometacarpal and metacarpophalangeal joints

Question 12

innervation flexor pollis brevis

Answer 12

recurrent branch of the median nerve

Question 13

origin of the opponens pollicis

Answer 13

flexor retinaculum and trapezium

Question 14

insertion of the opponens pollicis

Answer 14

shaft of the 1st metacarpal

Question 15

action of the opponens pollicis

Answer 15

opposition of the thumb

Question 16

innervation of the opponens pollicis

Answer 16

recurrent branch of the median nerve

Question 17

origin of the adductor pollicis

Answer 17

OBLIQUE HEAD: bases of the 2nd and 3rd metacarpals and adjacent carpal bones TRANSVERSE HEAD: shaft of the 3rd metacarpal

Question 18

insertion of the adductor pollicis

Answer 18

medial aspect of the base of the proximal phalanx of the thumb

Question 19

action of the adductor pollicis

Answer 19

Adduction of the thumb at the carpometacarpal and metacarpopharangeal joints

Question 20

innervation of the adductor pollicis

Answer 20

deep branch of ulnar nerve

Question 21

origin of the abductor digiti minimi

Answer 21

pisiform bone

Question 22

insertion of the abductor digiti minimi

Answer 22

base of the proximal phalanx of the little finger

Question 23

action of the abductor digiti minimi

Answer 23

abduction of the little finger

Question 24

innervation of the abductor digiti minimi

Answer 24

deep branch of the ulnar nerve

Question 25

origin of the flexor digiti minimi brevis

Answer 25

flexor retinaculum + hook of hamate

Question 26

insertion of the flexor digiti minimi brevis

Answer 26

base of the proximal phalanx of the little finger

Question 27

innervation of the flexor digiti minimi brevis

Answer 27

deep branch of the ulnar nerve

Question 28

action of the flexor digiti minimi brevis

Answer 28

flexion of the little finger

Question 29

origin of the opponens digiti minimi

Answer 29

flexor retinaculum + hook of hamate

Question 30

insertion of the opponens digiti minimi

Answer 30

shaft of the 5th metacarpal

Question 31

action of the opponens digiti minimi

Answer 31

flexion and lateral rotation of the 5th metacarpal

Question 32

innervation of the opponens digiti minimi

Answer 32

deep branch of the ulnar nerve

Question 33

origin of the lumbricals

Answer 33

tendons of the flexor digitorum profundus

Question 34

insertion of the lumbricals

Answer 34

lateral side of the extensor expansion of the corresponding finger

Question 35

action of the lumbricals

Answer 35

flexion of the metacarpophalangeal joints and extension of the interphalangeal joints

Question 36

innervation of the lumbricals

Answer 36

1st & 2nd = median nerve 3rd and 4th= deep branch of the ulnar

Question 37

origin of the palmar interossei

Answer 37

metacarpel of corresponding finger

Question 38

insertion of the palmar interossei

Answer 38

``` 1st= medial side of the base of proximal phalanx of index finger 2nd/3rd= lateral side of the base of proximal phalanx of ring/index fingers ```

Question 39

action of the palmar interossei

Answer 39

adduction and flexion at the metacarpophalangeal joints and extension at the interphalangeal joints

Question 40

innervation of the palmar interossei

Answer 40

deep branch of the ulnar nerve

Question 41

origin of the dorsal interossei

Answer 41

two heads from two sides of metacarpal bones

Question 42

insertion of the dorsal interossei

Answer 42

``` 1st= lateral side of base of proximal phalanx of index finger 2nd/3rd= both sides of base of proximal phalanx of middle finger 4th= medial side of base of proximal phalanx of ring finger ```

Question 43

action of the dorsal interossei

Answer 43

adduction and flexion at the metacarpophalangeal joints and extension at the interphalangeal joints

Question 44

innervation of the dorsal interossei

Answer 44

deep branch of the ulnar nerve