MOINA Intrinsic Hand Muscles

Question 1

(O) Palmaris brevis

Answer 1

Flexor retinaculum & palmar aponeurosis

Question 2

(I) Palmaris brevis

Answer 2

Skin of palm

Question 3

(N) Palmaris brevis

Answer 3

Superficial branch of ulnar nerve

Question 4

(O) Lumbricals [4]

Answer 4

Tendons of flexor digitorum profundus

Question 5

(I) Lumbricals [4]

Answer 5

Extensor expansion of medial 4 fingers

Question 6

(N) Lumbricals [4]

Answer 6

1st and 2nd, medial nerve

3rd and 4th, deep branch of ulnar nerve

Question 7

(A) Lumbricals [4]

Answer 7

Flex metacarpophalangeal joints and extend interphalangeal joints of fingers except thumb

Question 8

(O) Palmar [4]

Answer 8

1st arises from base of 1st metacarpal

Remaining three from anterior surface of shafts of 2nd, 4th & 5th metacarpals

Question 9

(I) Palmar [4]

Answer 9

Proximal phalanges of thumb & index, ring & middle fingers, and dorsal extensor expansion of each finger

Question 10

(A) Palmar [4]

Answer 10

Palmar interossei adduct fingers toward center of 3rd finger

Question 11

(N) Palmar [4]

Answer 11

Deep branch of ulnar nerve

Question 12

(O) Dorsal [4]

Answer 12

Contiguous sides of shafts of metacarpal bones

Question 13

(I) Dorsal [4]

Answer 13

Proximal phalanges of index, ring & middle fingers, and dorsal extensor expansion

Question 14

(N) Dorsal [4]

Answer 14

Deep branch of ulnar nerve

Question 15

(A) Dorsal [4]

Answer 15

Dorsal interossei abduct fingers from center of 3rd finger; both palmar and dorsal flex metacarpophalangeal joints and extend interphalangeal joints

Question 16

(O) Abductor pollicis brevis

Answer 16

Scaphoid, trapezium, flexor retinaculum

Question 17

(I) Abductor pollicis brevis

Answer 17

Base of proximal phalanx of thumb

Question 18

(N) Abductor pollicis brevis

Answer 18

Median nerve

Question 19

(O) Flexor pollicis brevis

Answer 19

Flexor retinaculum

Question 20

(I) Flexor pollicis brevis

Answer 20

Base of proximal phalanx of thumb

Question 21

(N) Flexor pollicis brevis

Answer 21

Median nerve

Question 22

(A) Flexor pollicis brevis

Answer 22

Flexes metacarpophalangeal joint of thumb

Question 23

(O) Opponens pollicis

Answer 23

Flexor retinaculum

Question 24

(I) Opponens pollicis

Answer 24

Shaft of metacarpal bone of thumb

Question 25

(N) Opponens pollicis

Answer 25

Median nerve

Question 26

(O) Adductor pollicis

Answer 26

Oblique head, 2nd and 3rd metacarpals | Transverse head, 3rd metacarpal

Question 27

(I) Adductor pollicis

Answer 27

Base of proximal phalanx of thumb

Question 28

(N) Adductor pollicis

Answer 28

Deep branch of ulnar nerve

Question 29

(O) Abductor digiti minimi

Answer 29

Pisiform bone

Question 30

(I) Abductor digiti minimi

Answer 30

Base of proximal phalanx of little finger

Question 31

(O) Flexor digiti minimi

Answer 31

Flexor retinaculum

Question 32

(I) Flexor digiti minimi

Answer 32

Base of proximal phalanx of little finger

Question 33

(O) Opponens digiti minimi

Answer 33

Flexor retinaculum

Question 34

(I) Opponens digiti minimi

Answer 34

Medial border of 5th metacarpal

Question 35

(A) Opponens digiti minimi

Answer 35

Pulls 5th metacarpal forward as in cupping the palm