Upper Limb 3 Flashcards

1
Q

Which muscle adducts the wrist

A

Flexor Carpi ulnaris

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2
Q

Which muscle abducts the wrist

A

Flexor carpi radialis

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3
Q

Where is the common flexor origin

A

The medial epicondyle of the humerus

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4
Q

Which nerve innervates the superficial muscles of the anterior forearm

A
  • the median supples the palmaris longus, flexor Carpi radialis and pronator teres
  • the ulnar nerve supplies the flexor Carpi ulnaris
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5
Q

Which joint does the brachioradialis work

A

The elbow joint - flexion

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6
Q

Which nerve innervates the brachioradialis

A

Radial nerve

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7
Q

What is the distal attachment of the flexor digitorum superficialis

A

The shaft of the middle phalange on each finger which isn’t the thumb

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8
Q

What is the innervation of the flexor digitorum superficialis

A

Median nerve

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9
Q

Action of the flexor digitorum superficialis

A

Flexes the wrist and flexes the metacarpopharyngeal joints and proximal interpharyngeal joints of the 4 digits not including the thumb

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10
Q

Which muscles flex the wrist

A
  • Flexor Carpi ulnaris
  • flexor Carpi radialis
  • palmaris longus (when present)
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11
Q

Action of flexor digitorum profundus

A

Flexion of distal interpharyngeal joints and flexion of wrist and flexion of metacarpopharyngeal joints

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12
Q

Innervation of the flexor digitorum profundus

A

The medial 2 fingers are innervated by ulnar and more lateral 2 fingers (middle and index) are innervated by median

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13
Q

Where does the flexor digitorum profundus originate and attach

A

Anterior surface of ulna and inserts on distal phalanges of 4 fingers

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14
Q

Action of the pronator quadratus

A

Pronation of forearm

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15
Q

Innervation of the pronator quadratus

A

Median nerve

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16
Q

Where does the flexor pollicis longus originate and then attach

A

Anterior surface of radius to the distal phalange of the thumb

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17
Q

Action of the flexor pollicis longus

A

Flexes interpharyngeal and metacarpopharyngeal joint of the thumb

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18
Q

Which muscle does the supinator directly oppose

A

Pronator teres

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19
Q

Where does the supinator originate

A

The lateral epicondyle and ulna and inserts into the radius

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20
Q

Innervation of the flexor pollicis longus

A

Median nerve

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21
Q

Which muscle is described as the long flexor of the thumb

A

Flexor pollicis longus

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22
Q

Which muscles does the median nerve not supply in the forearm

A

The flexor Carpi ulnaris and the medial half of the flexor digitorum profundus (ulnar nerve)

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23
Q

What structure does the median nerve pass below to enter the hand

A

The flexor retinaculum of the hand

24
Q

Describe the path of the ulnar nerve

A

After passing posterior to the median epicondyle of the humerus, the ulnar nerve enters the forearm by passing between the heads of the flexor Carpi ulnaris muscle

25
Q

What is the relationship of the ulnar artery and ulnar nerve during their course in the forearm

A

The nerve is medial to the artery

26
Q

Contents of the carpal tunnel

A
  • Median nerve
  • 4 tendons of the flexor digitorum superficialis
  • 4 tendons of flexor digitorum profundus
  • 1 tendon of the flexor pollicis longus
27
Q

What forms the roof of the carpal tunnel

A

Flexor retinaculum

28
Q

Which nerve passes through the carpal tunnel

A

Median nerve

29
Q

What causes carpal tunnel syndrome

A

Compression of the medial nerve

30
Q

Which group of muscles will atrophy in carpal tunnel syndrome

A

The thenar eminence

31
Q

What does the median nerve supply once through the carpal tunnel

A
  • sensory innervation to the palmar skin and dorsal nail beds of the lateral 3 and a half digits
  • motor innervation to the lateral two lumbricals
  • thenar muscle group - thumb
32
Q

Which muscles is the palmar aponeurosis continuous with

A
  • palmaris longus tendon and flexor retinaculum
33
Q

Which muscles make up the thenar eminence

A
  • adductor pollicis brevis
  • flexor pollicis brevis
  • opponens pollicis
34
Q

Which nerve innervates all the muscles of the thenar eminence

A

The median nerve

35
Q

What is the root value of the nerve which innervates the muscles of the thenar eminence

A

(Median) C8, T1

36
Q

Name the muscles of the hypothenar eminence

A
  • flexor digiti minimi
  • abductor digiti minimi
  • opponens digiti mimimi
37
Q

What nerve supplies the muscles of the hypothenar eminence

A

Ulnar nerve

38
Q

What is the action of adductor pollicis

A

Adduction of the thumb

39
Q

Innervation of the adductor pollicis

A

Ulnar nerve

40
Q

From which tendon do the lumbricals originate

A

Flexor digitorum profundus

41
Q

What is the action of the lumbricals

A

FLEXION of the fingers at the metacarpopharyngeal joint and simultaneous EXTENSION of the interpharyngeal joints of 2nd to 5th digits

42
Q

Innervation of the lumbricals

A

The medial 2 are innervated by the ulnar and the lateral 2 are innervated by the median

43
Q

What is the action of the dorsal interossei

A

Abduct the fingers - away from axial line

44
Q

What is the action of the palmar interossei

A

Adduction of the fingers - towards the axial line - the middle finger

45
Q

Which nerve innervates the dorsal and palmar interossei

A

Ulnar nerve

46
Q

Where would pain be felt in a scaphoid fracture

A

The anatomical snuffbox

47
Q

Which nerve can be damaged in a fracture of the lunate carpal bone

A

The median nerve

48
Q

What kind of joint is the carpometacarpal joint of the thumb

A

Saddle type synovial

49
Q

What kind of joint is the wrist joint

A

Synovial condyloid

50
Q

Which carpal bones are part of the wrist joint

A
  • scaphoid
  • lunate
  • triquetrum
51
Q

What movement can occur at the wrist joint

A

Flexion, extension, adduction and abduction

52
Q

Which muscles flex the wrist

A

Flexor Carpi ulnaris, flexor Carpi radialis and flexor digitorum superficialis assists

53
Q

Which muscle extend the wrist

A

Extensor Carpi radialis longus and brevis, extensor Carpi ulnaris and extensor digitorum assists

54
Q

Which muscles adduct the wrist joint

A

Extensor Carpi ulnaris and flexor Carpi ulnaris

55
Q

Which muscles abduct the wrist joint

A

Flexor Carpi radialis and extensor Carpi radialis longus and brevis

56
Q

Easiest way to fracture scaphoid bone

A

Falling Ono outstretched hand