Upper Limb 3 - Anterior Forearm, Neurovascular, Carpal Tunnel, Hand + Wrist

Question 1

What action do the muscles of the anterior forearm perform?

Answer 1

Flexion of the wrist and fingers

Pronator of the Forearm

Question 2

What are the 3 different groups of the anterior forearm known as?

Answer 2

1 - Superficial

2- Intermediate

3 - Deep

Question 3

What are the 4 muscles of the superficial group of muscles in the anterior forearm?

Answer 3

1 - Pronator Teres

2 - Flexor Carpi Radialis

3 - Palmaris Longus

4 - Flexor Carpi Ulnaris

Question 4

What is the action of pronator teres?

Answer 4

Pronation of forearm

Question 5

What is the innervation of pronator teres?

Answer 5

Median nerve

Question 6

Which muscle of the superficial anterior forearm compartment performs adduction at the wrist joint?

Answer 6

Flexor Carpi Ulnaris

Question 7

Which muscle of the superficial group of muscles is responsible for abduction at the wrist joint?

Answer 7

Flexor Carpi Radialis

Question 8

Which nerves innervate the muscles of the superficial group of muscles in the anterior forearm?

Answer 8

Median nerve - Pronator Teres, Flexor Carpi Radialis, Palmaris Longus

Ulnar nerve - Flexor Carpi Ulnaris

Question 9

On which joint does the brachioradialis muscle act?

Answer 9

Elbow

Question 10

What is the main action of brachioradialis?

Answer 10

Flexion of the elbow

Question 11

Which nerve innervates the brachioradialis muscle?

Answer 11

Radial nerve

Question 12

What is the only muscle of the posterior compartment which performs flexion?

Answer 12

Brachioradialis

Question 13

To which digits are the tendons of flexor digitorum superficialis attached?

Answer 13

All fingers except the thumb

Question 14

Onto which phalynx of the fingers do the tendons of the flexor digitorum superficialis attach?

Answer 14

Middle

Question 15

What actions do the flexor digitorum superficialis muscles perform?

Answer 15

Flex the wrist, metacarpophalangeal and interphalangeal joints

Question 16

On which joint of the fingers do the flexor digitorum superficialis muscles not act?

Answer 16

Distal interphalangeal joints

Question 17

Which nerve innervates the flexor digitorum superficialis muscle?

Answer 17

Median nerve

Question 18

Which muscles make up the deep group of muscles of the anterior forearm?

Answer 18

Flexor Pollicis Longus

Flexor Digitorum Profundus

Pronator Quadratus

Question 19

What joints does the flexor digitorum profundus muscle act on?

Answer 19

Wrist and all finger joints

Question 20

What is the action of flexor digitorum profundus on the wrist and fingers?

Answer 20

Flexion

Question 21

Which part of the flexor digitorum profundus muscle is supplied by the ulnar nerve?

Answer 21

Medial half

Question 22

Which part of the flexor digitorum profundus muscle is supplied by the median nerve?

Answer 22

Lateral half

Question 23

Which nerve innervates flexor pollicis longus?

Answer 23

Median nerve

Question 24

What is the action and innervation of pronator quadratus?

Answer 24

Pronates forearm - Median nerve

Question 25

Where does the median nerve lie in relation to the brachial artery within the cubital fossa?

Answer 25

The median nerve lies medial to the brachial artery

Question 26

Which muscles does the median nerve not supply in the anterior forearm?

Answer 26

Flexor carpi Ulnaris Flexor Digitorum Profundus - Medial half

Question 27

How does the median nerve enter the hand?

Answer 27

It passes below the flexor retinaculum

Question 28

What is the relationship of the ulnar nerve in relation to the ulnar artery?

Answer 28

Medial

Question 29

What are the 2 terminal branches of the brachial artery?

Answer 29

Radial artery Ulnar artery

Question 30

Which arterial pulse can be felt medial to the tendon of the flexor carpi radialis muscle?

Answer 30

Radial pulse

Question 31

What are the contents of the flexor retinaculum?

Answer 31

Median Nerve 4 Tendons of Flexor Digitorum Superficialis 4 Tendons of Flexor Digitorum Profundus 1 Tendon of Flexor Pollicis Longus

Question 32

Which structure of the carpal tunnel is most commonly affected in carpal tunnel syndrome?

Answer 32

Median nerve

Question 33

What are the different muscle compartments of the hand?

Answer 33

Thenar compartment Hypothenar compartment Adductor compartment Lumbricals and long flexor tendons - central compartment Interosseous compartment

Question 34

What are the muscles that make up the Thenar muscle group?

Answer 34

Opponens Pollicis Flexor Pollicis Brevis Abductor Pollicis Brevis

Question 35

Which nerve innervates all the muscles of the Thenar muscle group?

Answer 35

Median nerve

Question 36

Which segmental levels make up the Median nerve?

Answer 36

C6, C7, C8, T1

Question 37

What muscles make up the Hypothenar group of muscles?

Answer 37

Opponens Digiti Minimi Flexor Digiti Minimi Abductor Digiti Minimi

Question 38

Which nerve innervates the Hypothenar muscles?

Answer 38

Ulnar nerve

Question 39

Which nerve innervates the Adductor Pollicis?

Answer 39

Ulnar nerve

Question 40

From the tendons of which muscles do the lumbricals originate?

Answer 40

Flexor Digitorum Profundus

Question 41

What action do the lumbricals have on the fingers at the metacarpophalangeal joints?

Answer 41

Flex

Question 42

Which nerve innervates the medial two lumbricals?

Answer 42

Ulnar nerve

Question 43

Which nerve innervates the two lateral lumbricals?

Answer 43

Median

Question 44

How many dorsal interossei muscles are there?

Answer 44

4

Question 45

How many palmar interossei muscles are there?

Answer 45

3

Question 46

What is the action of the dorsal interossei muscles?

Answer 46

Abduct the fingers

Question 47

What is the action of the palmar interossie muscles?

Answer 47

Adduct the fingers

Question 48

What nerve innervates the dorsal and palmar interossei muscles?

Answer 48

Ulnar nerve

Question 49

Lesions of which nerve trunk affects the short muscles (interossie and lumbricals) of the hand? What is the resulting paralysis called?

Answer 49

Lower Trunk - Klumpke Paralysis

Question 50

Which artery contributes the most to the superficial palmar arch?

Answer 50

Radial artery

Question 51

Which artery contributes the most to the deep palmar arch?

Answer 51

Ulnar artery

Question 52

What are the main nerves which supply the hand?

Answer 52

Median nerve Ulnar nerve

Question 53

What does the radial nerve innervate within the hand?

Answer 53

Skin on the dorsal aspect of the hand

Question 54

Through which structure does the median nerve enter the hand?

Answer 54

Carpal Tunnel

Question 55

Which structures does the ulnar nerve not innervate?

Answer 55

Thenar Muscles Lumbricals of the 1st and 2nd finger

Question 56

Which segmental nerve values make up the median and ulnar nerves?

Answer 56

Median nerve - C6, C7, C8, T1 Ulnar nerve - C8 and T1

Question 57

Which cord of the brachial plexus does the ulnar nerve originate from?

Answer 57

Medial cord

Question 58

What type of joint is the wrist joint?

Answer 58

Synovial Condyloid

Question 59

What structures form the proximal part of the wrist joint?

Answer 59

Distal end of Radius Articular disc

Question 60

Which carpal bones form the distal articular part of the wrist joint?

Answer 60

Scaphoid Lunate Triquetrium

Question 61

What movements can be performed at the wrist joint?

Answer 61

Flexion Extension Adduction Abduction

Question 62

What function do the muscles of the anterior compartment of the forearm have on the wrist joint?

Answer 62

Flexion

Question 63

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

Answer 63

Flexors Medial deviation

Question 64

Which muscles are responsible for abduction of the wrist?

Answer 64

Flexor carpi radialis Extensor carpi radialis longus Extensor carpi radialis brevis Abductor pollicus longus

Question 65

What is the action of the muscles in the posterior compartment of the forearm on the wrist?

Answer 65

Extension