MSK Workbook 3

Question 1

The muscles in the anterior compartment of the forearm are flexors or extensors and facilitate what?

Answer 1

Flexors

Facilitate pronation

Question 2

Name the superficial and intermediate muscles of the anterior forearm

Answer 2

Pronator teres
Brachioradialis
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris

Question 3

What is the action of the pronator trees

Answer 3

Pronation and weak flexion of elbow

Question 4

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

Answer 4

Flexor carpi radialis

Question 5

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

Answer 5

Flexor carpi ulnaris

Question 6

What muscle lies intermediate compartment of the forearm anteriorly

Answer 6

Flexor digitorum superficialis

Question 7

To which digits (fingers) are the 4 tendons of FDS attached?

Answer 7

Little finger
Index finger
Middle finger
Ring finger

Question 8

On which phalanx is the FDS tendon inserted into

Answer 8

Proximal

Question 9

What nerve innervates FDS

Answer 9

Median nere

Question 10

What is the main action of the brachioradialis

Answer 10

Flexes the elbow when the forearm is in neutral and acts to stabilise the elbow during rapid flexion or extension

Question 11

What nerve innervates the brachioradialis

Answer 11

Radial nerve

Question 12

What are the 3 deep group muscles of the anterior compartment of the arm

Answer 12

Flexor Digitorum Profundus
Flexor Pollicis Longus
Pronator quadratus

Question 13

What is the action of the Flexor Digitorum Profundus

Answer 13

Sole flexor of distal interphalangeal joints

Question 14

What is the action of the Flexor Pollicis Longus

Answer 14

Long flexor of the thumb

Question 15

Which nerve innervates the Flexor Pollicis Longus

Answer 15

C8, T1 Ulnar

Question 16

What is the innervation of the pronator quadratus

Answer 16

C8,T1 Ulnar

Question 17

Which muscle(s) does the median nerve not supply in the anterior forearm?

Answer 17

Flexor carpi ulnaris and medial half of flexor digitorum profundus

Question 18

What test is used to determine the patency of the arteries in the distal forearm

Answer 18

Allen’s Test

Question 19

What is the content of the Carpal Tunnel

Answer 19

4 tendons of FDS
4 tendons of FDP
1 tendon of FPL
Median Nerve

Question 20

What muscle of the forearm is continuous with the fascia of the palm

Answer 20

Palmaris longus

Question 21

Name the 5 compartments of the hand

Answer 21

Thenar
Hypothenar
Lumbricals and long flexor tendons
Adductor
Interosseous

Question 22

Name the 3 Thenar muscles

Answer 22

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

Question 23

Name the 3 hypothenar muscles

Answer 23

Abductor digiti minimi
Flexor digiti minimi
Opponens digit minimi

Question 24

Which nerve innervates the hypothenar muscles

Answer 24

Ulnar nerve

Question 25

Which nerves innervate the thenar muscles

Answer 25

Median nerve

Question 26

Which nerve root from the brachial plexus series to provide the majority of the innervation to the hypothenar muscles

Answer 26

C8 T1

Question 27

Name the 3 flexor tendons in the central compartment of the hand

Answer 27

Flexor digitorum superficialis Flexor digitorum profundus Flexor pollicis longus

Question 28

What is the action of the lumbricals

Answer 28

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

Question 29

The medial 2 lumbircals are innervated by the ___

Answer 29

Ulnar nerve

Question 30

The lateral 2 lumbricals are innervated by the ___

Answer 30

Medial nerve

Question 31

What nerve innervates adductor pollicis

Answer 31

Radial nerve

Question 32

How many dorsal interossei are there

Answer 32

4

Question 33

How many palmar interossei are there

Answer 33

3

Question 34

What is the action of the dorsal interossei

Answer 34

Abduct the fingers

Question 35

What is the action of palmar interossei

Answer 35

Adduct the fingers

Question 36

Which nerve innervates the dorsal and palmar interossei muscles

Answer 36

Deep branch of ulnar nerve (C8,T1)

Question 37

Which artery is the main contributor of the superficial palmar arch

Answer 37

Ulnar artery

Question 38

Which artery is the main contributor of the deep palmar arch

Answer 38

Radial artery

Question 39

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

Answer 39

Medial

Question 40

What sits between the ulna and carpal bones

Answer 40

Triangular fibrocartilage

Question 41

What type of fluid is found between the forearm and carpal bones

Answer 41

Synovial fluid

Question 42

Flexion of the wrist joint caused by contraction of the muscles in the ____

Answer 42

Anterior compartment

Question 43

Extension of the wrist joint is caused by contraction of the muscles in the ____

Answer 43

Posterior compartment

Question 44

Combined action of flexor and extensor carpi ulnaris causes

Answer 44

Ulnar deviation | Adduction

Question 45

Which muscles are responsible for radial deviation or abduction

Answer 45

Flexor and extensor carpi radialis