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Orthopaedics ST3 > Anatomy > Flashcards

Anatomy Flashcards

1
Q

from what part of the brachial plexus does the musculocutaneous nerve arise?

A

Lateral Cord (C5,6,7)

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2
Q

how does the musculocutaneous nerve leave the axilla?

A

By piercing coracobrachialis

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3
Q

where does the musculocutaneous nerve travel in the arm?

A

Between biceps and brachialis

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4
Q

where does the musculocutaneous nerve travel at the elbow?

A

Lateral to biceps tendon becoming lateral cutaneous nerve of forearm

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5
Q

what does the musculocutaneous nerve supply? (motor)?

A

Anterior compartment of arm:
Biceps
brachialis
Coracobrachialis

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6
Q

what does the musculocutaneous nerve supply? (sensory)?

A

lateral forearm

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7
Q

from what part of the brachial plexus does the axillary nerve arise?

A

Posterior Cord (C5,6,7)

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8
Q

how does the axillary nerve leave the axilla?

A
  • travels anterior to subscapularis
  • travels posteriorly
  • leaves via quadrangular space
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9
Q

what are the terminal branches of the axillary nerve?

A
  • Anterior - deltoid
  • posterior - to teres minor + sensation
    (upper lateral nerve of ARM)
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10
Q

what forms the radial border of the carpal tunnel?

A

Scaphoid tubercle and trapezium

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11
Q

what forms the ulnar border of the carpal tunnel?

A

Pisiform and hook of hamate

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12
Q

what forms the floor of the carpal tunnel?

A

proximal carpal row bones

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13
Q

what forms the roof of the carpal tunnel?

A

flexor retinaculum

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14
Q

what are the contents of the carpal tunnel?

A

median nerve
4x FDP tendons
4 x FDS tendons
FPL tendon

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15
Q

where is the palmar cutaneous branch of the median nerve given off?

A

Before entering the carpal tunnel

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16
Q

from which part of the brachial plexus does the radial nerve arise?

A

Posterior Cord (C5-T1)

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17
Q

how does the radial nerve leave the axilla?

A

through triangular interval along with profunda brachia artery going posterolaterally

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18
Q

where does the radial nerve travel in the arm?

A
  • Descends in spiral groove
  • pierces inter muscular septum
  • enters anterior compartment of arm
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19
Q

where does the radial nerve travel at the elbow?

A
  • lies anterior to lateral epicondyle

- enters forearm between brachialis + brachioradialis

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20
Q

what are the terminal branches of the radial nerve?

A
  1. Branches to ECRL + brachioradialis
  2. Posterior interosseous nerve (travels between 2 heads of supinator)
  3. Superficial radial nerve
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21
Q

from which part of the brachial plexus does the median nerve arise?

A

Medial + Lateral Cords (C6-T1)

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22
Q

where does the median nerve travel in the arm?

A
  • Lateral to brachial artery

- moves medial to brachial artery half way down arm

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23
Q

where does the median nerve travel at the elbow?

A
  • enters anterior compartment of forearm
  • between 2 heads of pronator teres
  • in cubital fossa
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24
Q

where does the median nerve travel in the forearm?

A

Between FDS + FDP

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25
Q

what branches does the median nerve give off in the forearm?

A
  • anterior interosseous nerve

- palmar cutaneous branch

26
Q

which branches does the median nerve give off after passing through the carpal tunnel?

A
  • Recurrent motor branch

- Palmar digital branch

27
Q

which muscles are innervated by the anterior interosseous nerve?

A

deep anterior compartment

  • FPL
  • Radial 1/2 of FDP
  • PQ
28
Q

which muscles are supplied by the recurrent motor branch of the median nerve?

A

Thenar muscles

LOAF

29
Q

from where in the brachial plexus does the ulnar nerve arise?

A

Medial Cord (C8,T1)

30
Q

where does the ulnar nerve travel in the arm?

A

Medial side

posterior to axillary vessels

31
Q

where does the ulnar nerve travel in the forearm?

A

Between FDP + FCU

32
Q

where does the ulnar nerve travel in the wrist?

A
  • superficial to flexor retinaculum
  • medial to ulnar artery
  • through guyons canal
  • terminates in deep + superficial branches
33
Q

which structures pass posterior to the medial malleolus?

A

T - tibialis posterior
D - flexor digitorum longus
A - posterior tibial artery
V - posterior tibial vein
N - tibial nerve
H - flexor hallucis longus

34
Q

which structures pass anterior to the medial malleolus?

A

Long saphenous vein
Saphenous nerve

35
Q

which structures pass posterior to the lateral malleolus?

A

Peroneus brevis
Peroneus longus
Sural nerve
Short saphenous vein

36
Q

which of the peroneus muscles is closer to the bone?

A

Peroneus brevis

37
Q

which nerve may be damaged when approaching the fibula?

A

superficial peroneal nerve

38
Q

does the ulnar nerve travel medial or lateral to the ulnar artery at the wrist?

A

Medial

39
Q

Through what canal does the ulnar nerve travel at the elbow?

A

Cubital Tunnel

40
Q

The ulnar nerve arises from which cord of the brachial plexus?

A

Medial (C8-T1)

41
Q

the ulnar nerve pierces what septum in the arm?

A

Mid fascial septum to enter posterior compartment

42
Q

the ulnar nerve lies medial or lateral to the brachial artery in the arm?

A

Medial

43
Q

The ulnar nerve supplies what muscles in the forearm?

A

FCU and ulnar 1/2 of FDP

44
Q

the median nerve arises from what cords of the brachial plexus?

A

Medial and Lateral

45
Q

through what space does the radial nerve leave the axilla?

A

Triangular interval

46
Q

the radial nerve travels with what artery through much of its course?

A

Profunda Brachii artery

47
Q

what are the terminal branches of the radial nerve?

A

Deep branch
Superficial radial nerve

48
Q

the deep branch of the radial nerve becomes the posterior interosseous nerve at what point?

A

When is enters supinator

49
Q

which 3 muscles attach to the coracoid?

A

Coracobrachialis, Biceps SH, pec minor

50
Q

Where does the biceps insert?

A

Bicipital tuberosity of radius

51
Q

what does the neural arch of a vertebra consist of?

A

2 transverse processes, 1 spinous process

52
Q

facet joints are formed of what?

A

superior and inferior articular processes of adjacent vertebra

53
Q

facet joints are a form of what joint? (zygapophyseal joints)

A

synovial joint

54
Q

joints can be 1 of 3 types?

A

Fibrous
Cartilaginous
Synovial

55
Q

what is an example of a fibrous joint?

A

Between bones of skull
Non moveable

56
Q

what is an example of a cartilaginous joint?

A

IV discs, between vertebrae (somewhat moveable)

57
Q

what is an example of a synovial joint?

A

Hip
Freely moveable

58
Q

what is an example of a synovial joint?

A

Hip
Freely moveable

59
Q

what is the structure of an intervertebral disc?

A

Outer fibrous ring - annulus fibrosus
Inner gel like - nucleus pulposus

60
Q

intervertebral discs form what kind of joint?

A

fibrocartiliginous

61
Q

what is the function of the intervertebral discs?

A

Shock absorption
Allow slight movement

Orthopaedics ST3 (7 decks)

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