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Anatomy MSK > MSK Workbook 3 > Flashcards

MSK Workbook 3 Flashcards

1
Q

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

A

Flexors

Facilitate pronation

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2
Q

Name the superficial and intermediate muscles of the anterior forearm

A 
Pronator teres
Brachioradialis
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
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3
Q

What is the action of the pronator trees

A

Pronation and weak flexion of elbow

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4
Q

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

A

Flexor carpi radialis

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5
Q

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

A

Flexor carpi ulnaris

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6
Q

What muscle lies intermediate compartment of the forearm anteriorly

A

Flexor digitorum superficialis

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7
Q

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

A

Little finger
Index finger
Middle finger
Ring finger

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8
Q

On which phalanx is the FDS tendon inserted into

A

Proximal

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9
Q

What nerve innervates FDS

A

Median nere

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10
Q

What is the main action of the brachioradialis

A

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

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11
Q

What nerve innervates the brachioradialis

A

Radial nerve

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12
Q

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

A

Flexor Digitorum Profundus
Flexor Pollicis Longus
Pronator quadratus

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13
Q

What is the action of the Flexor Digitorum Profundus

A

Sole flexor of distal interphalangeal joints

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14
Q

What is the action of the Flexor Pollicis Longus

A

Long flexor of the thumb

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15
Q

Which nerve innervates the Flexor Pollicis Longus

A

C8, T1 Ulnar

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16
Q

What is the innervation of the pronator quadratus

A

C8,T1 Ulnar

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17
Q

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

A

Flexor carpi ulnaris and medial half of flexor digitorum profundus

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18
Q

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

A

Allen’s Test

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19
Q

What is the content of the Carpal Tunnel

A

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

20
Q

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

A

Palmaris longus

21
Q

Name the 5 compartments of the hand

A 
Thenar
Hypothenar
Lumbricals and long flexor tendons
Adductor
Interosseous
22
Q

Name the 3 Thenar muscles

A

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

23
Q

Name the 3 hypothenar muscles

A

Abductor digiti minimi
Flexor digiti minimi
Opponens digit minimi

24
Q

Which nerve innervates the hypothenar muscles

A

Ulnar nerve

25
Q

Which nerves innervate the thenar muscles

A

Median nerve

26
Q

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

A

C8 T1

27
Q

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

A

Flexor digitorum superficialis
Flexor digitorum profundus
Flexor pollicis longus

28
Q

What is the action of the lumbricals

A

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

29
Q

The medial 2 lumbircals are innervated by the ___

A

Ulnar nerve

30
Q

The lateral 2 lumbricals are innervated by the ___

A

Medial nerve

31
Q

What nerve innervates adductor pollicis

A

Radial nerve

32
Q

How many dorsal interossei are there

A

4

33
Q

How many palmar interossei are there

A

3

34
Q

What is the action of the dorsal interossei

A

Abduct the fingers

35
Q

What is the action of palmar interossei

A

Adduct the fingers

36
Q

Which nerve innervates the dorsal and palmar interossei muscles

A

Deep branch of ulnar nerve (C8,T1)

37
Q

Which artery is the main contributor of the superficial palmar arch

A

Ulnar artery

38
Q

Which artery is the main contributor of the deep palmar arch

A

Radial artery

39
Q

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

A

Medial

40
Q

What sits between the ulna and carpal bones

A

Triangular fibrocartilage

41
Q

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

A

Synovial fluid

42
Q

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

A

Anterior compartment

43
Q

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

A

Posterior compartment

44
Q

Combined action of flexor and extensor carpi ulnaris causes

A

Ulnar deviation

Adduction

45
Q

Which muscles are responsible for radial deviation or abduction

A

Flexor and extensor carpi radialis

Anatomy MSK (8 decks)

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