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Anatomy > MSK cadavers upper limb > Flashcards

MSK cadavers upper limb Flashcards

1
Q
A
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2
Q

What is the common flexor origin in the forearm for superficial & intermediate flexors

A

medial epicondyl of humerus

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3
Q

what is the innervation of the superficial flexors

A

the superficial flexors are innervated by the median nerve (FCR, palmaris longud and pronator teres), apart from flexor carpi ulnaris- ulnar nerve

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4
Q

muscle in the intermediate flexor compartment of forearm & its innervation

A

flexor digitorum superficialis

Median nerve

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5
Q
A

A. Flexor carpi ulnaris

B. Palmaris longus

C. Flexor carpi radialis

D. Pronator teres

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6
Q

Action & innervation of brachioradialis

A

Flexion of the elbow

Innervation = radial nerve

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7
Q

label deep group of anterior forearm muscles & their innervation

A

FDP- lateral half= median n

medial half= ulnar n

FPL- median n

Pronator quadratus- median n

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8
Q

inserion and origin for FDS and FDP

A

FDS=Palmar surfaces of middle phalanges of medial 4 digits

FDP= Palmar surface of distal phalanges of medial 4 digits

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9
Q

neurovascular structures of the forearm

A
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10
Q

Describe Allens test

A

To determine the patency of the arteries in the distal forearm (prior to sampling of arterial blood, or insertion of arterial lines), Allen’s test is used.

The reason that this is performed is because in some individuals a unilateral circulation exists in the distal forearm. Therefore, if any cannulation is performed there is a risk of causing ischaemia (due to reduced blood flow) to the hand

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11
Q

Contens of the anticubital fossa from lateral to medial

A

Radial nerve, Brachial tendon, Brachial artery, Median nerve

Really Need Beer, To Be At My Nicest

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12
Q

What 4 carpal bones does the flecor retinaculum anchor to

A

scaphoid, trapezium, hamate and pisiform

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13
Q

Name the contents of the carpal tunnel & label diagram

A

Contents of Carpal Tunnel

4 tendons of flexor digitorum profundus

4 tendons of flexor digitorum superficialis

1 tendon of flexor pollicis longus

Median Nerve

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14
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A
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15
Q

what are the four mucles in the deep part of the central component of the palm

A
  1. Flexor digitorum superficialis
  2. Flexor digitorum profundus
  3. Flexor tendon sheaths: flexor pollicus longus
  4. lumbricles
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16
Q

what is the function of the lumbricals

A

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

  • bend a straightened finger
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17
Q

what do the lumbricals arise from

A

Medial and lateral aspects of the FDP tendon, between the 1st to 5th metacarpals

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18
Q

label this diagram

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19
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22
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23
Q

label these

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24
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25
Q

what type of joint is the proximal and dstil radio-ulnar joint

A
26
Q

what carpal bones does the radius articulate with

A

scaphoid and lunate bones

27
Q
A

A. ulna

b. lunate
c. triqetrum
d. hamate
e. capitate
f. trapezoid
g. trapezium

28
Q

label posterior compartment

A
29
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30
Q

label these two nerves

A
31
Q

what is the function of the Posterior interosseous nerve

A

main motor supply of the posterior forearm muscles- deep branch of the radial nerve

32
Q

where does the superficial branch of the radial nerve run?

A

As it branches at the cubital fossa it runs deep to brachioradialis and enters the hand passing over the anatomical snuff box

It is purely sensory and distributed to skin on the dorsum of the hand.

33
Q

label anatomical snuff box

A
34
Q

what four muscles attach onto the dorsal digital expansion + label the diagram

A
  1. Lumbricals of the hand
  2. dorsal interossei muscles
  3. Palmar interossei muscles
  4. Extensor indicis muscle
35
Q

Complete the diagram

A
36
Q

Complete diagram

A

a) Abductor pollicis brevis
b) Opponens pollicis
c) Ulnar artery
d) Ulnar nerve
e) Flexor carpi ulnaris
f) Palmaris longus
g) Flexor carpi radialis

37
Q

Complete diagram

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38
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Complete diagram

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39
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Complete the blanks

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40
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Complete the diagram

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41
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Fill in the blanks

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Fill in the blanks

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43
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Complete the diagram

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Complete the diagram

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Complete the diagram

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Complete the diagram

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Complete the diagram

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48
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Complete the diagram

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49
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Complete the diagram

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50
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Complete the diagram

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51
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Complete the diagram

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52
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Complete the diagram

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53
Q

Innervation of flexor digitorum profundus vs superficialis

A

FDP= Ulnar & median nerves

FDS= median nerve

54
Q

Relationship of the ulnar nerve and ulnar artery

A

After passing posterior to the medial epicondyle of the humerus the ulnar nerve enters the forearm by passing between the heads of flexor carpi ulnaris muscle.
Both the ulnar nerve and ulnar artery descend close to each other down the medial aspect of the forearm.

The ulnar nerve lies medially to the ulnar artery at the level of the wrist

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54
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Anatomy (30 decks)

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