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MSK - anatomy - ABDN > Upper limb 3 > Flashcards

Upper limb 3 Flashcards

1
Q

what are the general actions of the muscles of the anterior forearm

A

flexion of the wrist, fingers and pronation of the forearm (all of the superficial muscles that are attached to the medial epicondyle)

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2
Q

which epicondyle are the superficial muscles of the anterior forearm attached to

A

the medial epicondyle (this is why they cause pronation of the forearm)

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3
Q

name the superficial muscles of the forearm

A
  • flexor carpi ulnaris
  • palmar is longus
  • flexor carpi radialis
  • pronator teres
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4
Q

what nerve innervates most of the muscles of the anterior forearm

A

the median nerve

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5
Q

what muscles in the forearm are not innervated by the median nerve and what is there innervation

A
  • brachioradialis (radial nerve)
  • flexor carpi ulnaris (ulnar nerve)
  • the medial half of the flexor digitorum profundus (ulnar nerve)
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6
Q

what cords of the brachial plexus form the median nerve

A

the medial and the lateral

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7
Q

how does the median nerve enter the hand

A

via the carpal tunnel under the flexor retinaculum

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8
Q

what muscle of the anterior forearm is responsible for adducting the hand

A

flexor carpi ulnaris

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9
Q

what muscle of the anterior forearm is responsible for abducting the hand

A

flexor carpi radialis

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10
Q

name a superficial forearm muscle that is not attached to the medial epicondyle

A

the brachioradialis

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11
Q

what is the innervation of the brachioradialis

A

the radial nerve

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12
Q

what are the actions of the brachioradialis

A

supination of the forearm and flexion of the elbow joint

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13
Q

name the intermediate muscle of the forearm

A

flexor digitorum superficialis

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14
Q

what is the role of the flexor digitorum superficialis

A

flexion of the proximal inter-phalangeal joints

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15
Q

what is the innervation of the flexor digitorum superficialis

A

median nerve

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16
Q

what is the relation of the flexor digitorum superficialis to the flexor digitorum profundus

A

the FDP sits deep to the FDS

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17
Q

what is the innervation of the flexor digitorum profundus

A

the lateral half is innervated by the medial nerve and the medial half is innervated by the ulnar nerve

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18
Q

name the deep muscles of the anterior forearm

A
  • flexor digitorum profundus
  • pronator quadratus
  • flexor pollicis longus
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19
Q

what are the actions of the flexor polices longus

A

flexion of the thumb

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20
Q

where are the flexor digitorum profundus and the flexor polices longus in relation to each other

A

the flexor digitorum profundus is found on the medial side and the flexor polices longus is found on the lateral side

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21
Q

in the cubital fossa, where does the median nerve lie in relation to the brachial artery

A

the median nerve sits superficially to the brachial artery

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22
Q

what is the flexor retinaculum

A

this is a fibrous band in the anterior forearm that covers the carpal tunnel

23
Q

how does the ulnar nerve enter the forearm

A

between he heads of the flexor carpi ulnaris

24
Q

which epicondyle of the humerus does the ulnar nerve pass over

A

the medial nerve

25
Q

what are the actions of the flexor digitorum profundus

A

flexion of the hand and the fingers at both of the interphalangeal joints

26
Q

what are the contents of the carpal tunnel

A

9 tendons (4 FDS, 4 FDP and the palmar is longus tendon) and 1 nerve (median nerve)

27
Q

name the tendon that is continuous with the palmar apponeurosis

A

the palmaris longus tendon

28
Q

what is is the role of the thenar muscles

A

movement of the thumb

29
Q

name the 3 thenar muscles

A
  • abductor policis brevis
  • flexor policis brevis
  • opponens policis
30
Q

what is the innervation of the thenar muscles

A

the median nerve

31
Q

what is the role of the abductor policus brevis

A

abducts the thumb

32
Q

what is the role of the flexor policus brevis

A

flexes the thumb at the metacarpal-phalangeal joint

33
Q

what is the role of the opponens pollicus

A

oppose the thumb towards the palm of the hand

34
Q

name the 3 hypothenar muscles

A
  • abductor digiti minimi
  • flexor digiti minimi
  • opponens digiti minimi
35
Q

what is the innervation of the hypothenar muscles

A

the ulnar nerve

36
Q

what cord of the brachial plexus gives off the ulnar nerve

A

the medial cord

37
Q

name the muscle that adducts the thumb

A

adductor pollicis

38
Q

what is the innervation of the adductor pollicis muscle

A

the ulnar nerve

39
Q

where are the lumbrical muscles found in the hand

A

parallel to the metacarpal bones

40
Q

what are the actions of the lumbrical muscles

A

they flex the fingers at the metacarpal phalangeal joints and they extend the fingers at the interphalangeal joints (make an L with the finger)

41
Q

what is the innervation of the lumbrical muscles

A

the medial two are innervated by the ulnar nerve and the lateral two are innervated by the median nerve

42
Q

where are the interossei muscles located

A

between the metacarpal bones - there are two sets, a palmar and dorsal set

43
Q

what are the actions of the interossei muscles

A

the dorsal ones are responsible for abducting the fingers and the palmar ones are responsible for adducting the fingers

44
Q

what innervates the interossei muscles

A

the ulnar nerve

45
Q

what artery supplies the superficial palmar arch

A

the ulnar artery

46
Q

what artery supplies the deep palmar arch

A

the radial artery

47
Q

all of the muscles in the hand are innervated by the ulnar nerve expect what

A

the thenar muscles and the lateral 2 lumbrical muscles - these are innervated by the median nerve

48
Q

what nerve innervates the section of skin over the thenar muscles

A

the radial nerve

49
Q

what nerve innervates most of the skin on the dorsal of the hand

A

the radial nerve

50
Q

what nerve innervates the majority of the skin on the palmar aspect of the hand

A

the median nerve

51
Q

name the carpal bones

A

scaphoid, lunate, triquentrum, pisiform, trapezium, trapezoid, capitate and hamate

52
Q

what type of joint is the wrist joint

A

synovial condyloid

53
Q

what bones reticulate in the wrist joint

A

the scaphoid, lunate and the radius

MSK - anatomy - ABDN (4 decks)

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