Hand Muscles

Question 0

Hypothenar Muscles

Answer 0

ABductor Digiti Minimi
Flexor Digiti Minimi Brevis
Opponens Digiti Minmi

Question 1

Thenar Muscles

Answer 1

Opponens Pollicis
ABductor Pollicis Brevis
Flexor Pollicis Brevis
ADductor Pollicis

Question 2

Opponens Pollicis
origin
insertion

Answer 2

Flexor Rectinaculum, tubercles of scaphoid and trapezium

lateral side of 1st metacarpal

Question 3

Opponens Pollicis

nerve
action

Answer 3

Recurrent Branch of Median Nerve (C8, T1)

Opposition

Question 4

ABductor Pollicis Brevis

origin
insert

Answer 4

Flexor Retinaculum, tubercles of scaphoid and trapezium

lateral side of base of proximal phalanx of thumb

Question 5

ABductor Pollicis Brevis

nerve
action

Answer 5

Recurrent Branch of Median Nerve (C8, T1)

ABducts thumb

Question 6

Flexor Pollicis Brevis

origin
insert

Answer 6

Flexor retinaculum, tubercles of scaphoid and trapezium

lateral side of base of proximal phalanx of thumb

Question 7

Flexor Pollicis Brevis

nerve
action

Answer 7

Recurrent Branch of Median Nerve (C8, T1)

Flexes thumb

Question 8

ADductor Pollicis

origin: parts
insertion

Answer 8

Oblique Head: base of 2nd and 3rd metacarpals, capitate & adjacent carpals
Transverse Head: anterior surface of 3rd metacarpal

medial side of base of proximal phalanx of thumb

Question 9

ADuctor Pollicis

Nerve
Action

Answer 9

Deep Branch of Ulnar Nerve (C8, T1)

ADducts thumb toward lateral border of palm

Question 10

ABductor Digiti Minimi

origin
insert

Answer 10

Pisiform

Medial Side of proximal phalanx of 5th finger

Question 11

ABductor Digiti Minimi

nerve
action

Answer 11

Deep Branch of Ulnar Nerve (C8, T1)

Abducts 5th finger, assist in flexion of its proximal phalanx

Question 12

Flexor Digiti Minimi Brevis

origin
insert

Answer 12

Hook of Hamate and Flexor Retinaculum

medial side of base of proximal phalanx of 5th finger

Question 13

Flexor Digiti Minimi Brevis

nerve
action

Answer 13

Deep Branch of Ulnar Nerve (C8, T1)

flexes proximal phalanx of 5th finger

Question 14

Opponens Digiti Minimi

origin
insert

Answer 14

hook of hamate and flexor retinaculum

medial border of 5th metacarpal

Question 15

Opponens Digiti Minimi

nerve
action

Answer 15

Deep Branch of Ulnar Nerve (C8, T1)

Opposition

Question 16

Lumbricals 1&2

origin
insert

Answer 16

lateral 2 tendons of flexor digitorum profundus

lateral sides of extensor expansions of 2-5 fingers

Question 17

Lumbricals 1&2

nerve
action

Answer 17

Median Nerve (C8, T1)

flex metacarpophalangeal joints, extend interphalangeal joints of 2-5 fingers

Question 18

Lumbricals 3&4

origin
insert

Answer 18

Medial 3 tendons of flexor digitorum profundus

lateral sides of extensor expansions of 2-5 fingers

Question 19

Lumbricals 3&4

nerve
action

Answer 19

Deep Branch of Ulnar Nerve (C8, T1)

Flex metacarpophalangeal joints, extend interphalangeal joints of 2-5 fingers

Question 20

Dorsal Interossei 1-4

origin
insert

Answer 20

adjacent sides of 2 metacarpals

bases of proximal phalanges, extensor expansions of 2-4 fingers

Question 21

Dorsal Interossei 1-4

nerve
action

Answer 21

Deep Branch of Ulnar Nerve (C8, T1)

ABducts 2-4 fingers from axial line, flex metacarpophalangeal joint

Question 22

Palmar Interossei 1-3

origin
insert

Answer 22

Palmar surface of 2-4, 5 metacarpals

bases of proximal phalanges, extensor expansions of 2,4, 5 fingers

Question 23

Palmar Interossei 1-3

nerve
action

Answer 23

Deep branch of Ulnar Nerve (C8, T1)

ADucts 2,4,5 fingers toward axial line, flexes metacarpophalangeal joint