Finger joint muscles

Question 1

Flexion at MP joints:

Answer 1

• lumbricals

- interossesi

Question 2

flexion at MP of little finger:

Answer 2

-flexor digit minimi

Question 3

flexion at PIP joints:

Answer 3

• flexor digitorum superficialis

- lumbricals

Question 4

flexion at DIP joints:

Answer 4

-flexor digitorum profundus

Question 5

extension at MP joints of all fingers

Answer 5

-extensor digitorum

Question 6

extension of index finger:

Answer 6

-extensor indicis

Question 7

extension of little finger:

Answer 7

-extensor digiti minimi

Question 8

Extension at IP joints:

Answer 8

• lumbricals

- intersossei

Question 9

aBduction at MP joints:

Answer 9

• dorsal interossei

- aBductor digiti minimi

Question 10

aDDuction at MP joints of all fingers except the middle:

Answer 10

-palmar interossei

Question 11

opposition of little finger:

Answer 11

-opponens digiti minimi

Question 12

flexion at all joints of the thumb:

Answer 12

-flexor pollicis longus

Question 13

flexion at MP joint of thumb:

Answer 13

-flexor pollicis brevis

Question 14

extension at all joints of the thumb:

Answer 14

-extensor pollicis longus

Question 15

extension at MP joint of thumb:

Answer 15

-extensor pollicis brevis

Question 16

aBduction of thumb:

Answer 16

• aBductor pollicis longus

- aBductor pollicis brevis

Question 17

aDDuction of thumb:

Answer 17

-aDDuctor pollicis

Question 18

opposition of thumb:

Answer 18

-opponens pollicis

Question 19

lumbrical innervation

Answer 19

• median nerve: index and middle fingers (C8, T1)

- ulnar nerve (deep branch): ring and little (C8. T1)

Question 20

interossei innervation:

Answer 20

-ulnar nerve deep branch (C8, T1)

Question 21

flexor digitorum superficialis innervation:

Answer 21

-median nerve (C7, 8, T1)

Question 22

flexor digitorum profundus innervation:

Answer 22

• Median (anterior interosseous nerve) to index and middle finger
• Ulnar (deep branch) to ring and little

both are C8

Question 23

extensor digitorum innervation:

Answer 23

-radial (deep branch) C6, 7, 8

Question 24

extensor indicis innervation:

Answer 24

-radial (deep branch) C7,8

Question 25

extensor digiti minimi innervation:

Answer 25

-radial (deep branch) C7,8

Question 26

dorsal interossei innervation:

Answer 26

-ulnar (deep branch) C8, T1

Question 27

aBductor digiti minimi innervation:

Answer 27

-ulnar (deep branch) C8, T1

Question 28

palmar interossei innervation:

Answer 28

-ulnar (deep branch) C8, T1

Question 29

opponens digiti minimi innervation:

Answer 29

-ulnar (deep branch) C8, T1

Question 30

flexor pollicis longus innervation:

Answer 30

-median nerve (anterior interosseous nerve) C8, T1

Question 31

flexor pollicis brevis innervation:

Answer 31

-median (recurrent branch) C8, T1

Question 32

Extensor pollicis longus innervation:

Answer 32

-radial nerve (deep branch) C7,8

Question 33

extensor pollicis brevis innervation:

Answer 33

-radial nerve (deep branch) C7,8

Question 34

aBductor pollicis longus innervation:

Answer 34

-radial nerve (deep branch) C7,8

Question 35

aBductor pollicis brevis innervation:

Answer 35

-median (recurrent branch) C8, T1

Question 36

aDDuctor pollicis innervation:

Answer 36

-ulnar (deep branch) C8, T1

Question 37

Opponens pollicis innervation:

Answer 37

median (recurrent branch) C8, T1