Anatomy - Upper Limb 3

Question 1

What is the action of pronator teres?

Answer 1

Pronation

Question 2

What is the innervation of pronator teres?

Answer 2

Median nerve

Question 3

Apart from flexing the wrist, which superficial muscle is involved in the adduction of the wrist joint?

Answer 3

Flexor carpi ulnaris

Question 4

Apart from flexing the wrist, which superficial muscle is involved in the abduction of the wrist joint?

Answer 4

Flexor carpi radialis

Question 5

What is the innervation of flexor carpi radialis?

Answer 5

Median nerve

Question 6

What is the innervation of flexor carpi ulnaris?

Answer 6

Ulnar nerve

Question 7

What is the innervation of brachioradialis?

Answer 7

Radial nerve

Question 8

On which phalanx are the tendons of flexor digitorum superficialis inserted?

Answer 8

Medial

Question 9

Does the flexor digitorum superficialis muscle act on the distal interphalangeal joint?

Answer 9

No

Question 10

Does the flexor digitorum profundus muscle act on the distal interphalangeal joint?

Answer 10

Yes

Question 11

What is the innervation of flexor digitorum superficialis?

Answer 11

Median nerve

Question 12

What is the innervation of the medial aspect of the flexor digitorum profundus?

Answer 12

Ulnar nerve

Question 13

What is the innervation of the lateral aspect of the flexor digitorum profundus?

Answer 13

Median nerve

Question 14

What is the innervation of the flexor pollicis longus?

Answer 14

Anterior interosseous (median) nerve

Question 15

What is the innervation of the pronator quadratus?

Answer 15

Anterior interosseous (median) nerve

Question 16

What is the relationship of the brachial artery to the median nerve in the cubital fossa?

Answer 16

The nerve is lateral to the artery

Question 17

Does the median nerve enter the hand by passing below or above the flexor retinaculum?

Answer 17

Below

Question 18

What are the contents of the carpal tunnel?

Answer 18

Median nerve
4 tendons of FDP
4 tendons of FDS
1 tendon of flexor pollicis longus

Question 19

What are the three thenar muscles?

Answer 19

Abductor pollicis brevis (APB)
Flexor pollicis brevis (FPB)
Opponens pollicis

Question 20

Which nerve innervates all three muscles of the thenar eminence?

Answer 20

Median nerve

Question 21

What are the three hypothenar muscles?

Answer 21

Abductor digiti minimi
Flexor digiti minimi
Opponens digiti minimi

Question 22

Which nerve innervates all the hypothenar muscles?

Answer 22

Deep branch of the ulnar nerve

Question 23

What are the two heads of adductor pollicis known as?

Answer 23

Transverse head and oblique head

Question 24

Which nerve innervates adductor pollicis?

Answer 24

Deep branch of the ulnar nerve

Question 25

From which long flexor tendons do the lumbricals originate?

Answer 25

Tendons of flexor digitorum profundus

Question 26

What is the action of the lumbricals?

Answer 26

Flex the fingers at the metacarpophalangeal joint and simultaneously extend the interphalangeal joint of the 2nd to 5th digits

Question 27

What is the innervation of the medial two lumbricals?

Answer 27

Ulnar nerve

Question 28

What is the innervation of the lateral two lumbricals?

Answer 28

Median nerve

Question 29

How many dorsal interossei are there?

Answer 29

4

Question 30

How many palmar interossei are there?

Answer 30

3

Question 31

What is the action of the dorsal interossei on the fingers?

Answer 31

Abduction

Question 32

What is the action of the palmar interossei on the fingers?

Answer 32

Adduction

Question 33

What is the innervation of the interossei muscles?

Answer 33

Deep branch of ulnar

Question 34

Which artery is the main contributor of the superficial palmar arch?

Answer 34

Ulnar artery

Question 35

Which artery is the main contributor of the deep palmar arch?

Answer 35

Radial artery

Question 36

Which nerve supplies the skin on the dorsal aspect of the hand?

Answer 36

Radial nerve

Question 37

The ulnar nerve is a branch of which cord of the brachial plexus?

Answer 37

Medial

Question 38

What are the 8 carpal bones in the wrist?

Answer 38

``` Scaphoid Lunate Triquetrium Pisiform Trapezium Trapezoid Capitate Hamate ```

Question 39

What is the mnemonic to remember the 8 carpal bones of the wrist?

Answer 39

``` Some Lovers Try Positions That They Cant Handle ```

Question 40

What type of joint is the wrist?

Answer 40

Synovial condyloid or ellipsoid

Question 41

What are the three muscles that extend and adduct or abduct the hand at the wrist joint?

Answer 41

Extensor carpi radialis longus Extensor carpi radialis brevis Extensor carpi ulnaris

Question 42

What is the action of extensor carpi radialis longus and brevis on the wrist joint?

Answer 42

They both extend and abduct the wrist joint

Question 43

Which muscles extend the fingers?

Answer 43

Extensor digitorum Extensor indicis Extensor digiti minimi

Question 44

Which muscles extend or abduct the thumb?

Answer 44

Abductor pollicis longus Extensor pollicis brevis Extensor pollicis longus

Question 45

Which nerve innervates all the muscles of the posterior compartment of the forearm?

Answer 45

Radial nerve

Question 46

What is the nerve supply to the supinator muscle?

Answer 46

Deep branch of radial aka posterior interosseous

Question 47

Where does the radial nerve divide into the superficial and deep branches?

Answer 47

Cubital fossa

Question 48

Which two carpal bones can you feel in the anatomical snuffbox?

Answer 48

Scaphoid and trapezium

Question 49

Which artery lies in the floor of the snuff box?

Answer 49

Radial

Question 50

Which nerve innervates extensor pollicis longus, extensor pollicis brevis and abductor pollicis longus?

Answer 50

Deep branch of radial aka posterior interosseous nerve

Question 51

Which ligaments form the boundaries of the anatomical snuffbox?

Answer 51

Extensor pollicis longus | Extensor pollicis brevis

Question 52

Which nerve supplies pronator teres?

Answer 52

Median nerve

Question 53

What is the combined action of flexor carpi ulnaris and extensor carpi ulnaris?

Answer 53

Adduction

Question 54

Which nerve supplies the dorsal, distal part of the medial two and a half fingers?

Answer 54

Median nerve

Question 55

What type of joint is the wrist?

Answer 55

Synovial condyloid/ellipsoid