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HAE > Forearm > Flashcards

Forearm Flashcards

1
Q

Bones of wrist

A

Scaphoid, lunate, triquetral, pisiform

Trapezium, trapezoid, capitate, hamate

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2
Q

Wrist joint

A

Ulnar and radial collateral ligaments
Articular disc distal to ulna
Scaphoid and lunate articulate with radius
Can flex, extend, adduct, abduct

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3
Q

Compartments of forearm

A

Flexor - anteromedial, ventral muscle mass, arise from medial epicondyle, median and ulnar nerves
Extensor - posterolateral, dorsal muscle mass, arise from lateral epicondyle, radial nerve

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4
Q

Pronator teres origin

A

Common flexor tendon (medial epicondyle of humerus)

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5
Q

Pronator teres insertion

A

Radius, mid-shaft

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6
Q

Pronator teres innervation

A

Median nerve (direct, superficial compartment)

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7
Q

Pronator teres action

A

Pronates forearm

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8
Q

Flexor carpi radialis origin

A

Common flexor tendon (medial epicondyle of humerus)

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9
Q

Flexor carpi radialis insertion

A

Metacarpals

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10
Q

Flexor carpi radialis innervation

A

Median nerve (direct, superficial compartment)

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11
Q

Flexor carpi radialis action

A

Flexes and abducts hand

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12
Q

Palmaris longus origin

A

Common flexor tendon (medial epicondyle of humerus)

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13
Q

Palmaris longus insertion

A

Palmar aponeurosis

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14
Q

Palmaris longus innervation

A

Median nerve (direct, superficial compartment)

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15
Q

Palmaris longus action

A

Flexes hand

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16
Q

Flexor carpi ulnaris origin

A

Common flexor tendon (medial epicondyle of humerus)

Ulna

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17
Q

Flexor carpi ulnaris insertioin

A

Pisiform, hamate, 5th metacarpal

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18
Q

Flexor carpi ulnaris innervation

A

Ulnar nerve (direct)

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19
Q

Flexor carpi ulnaris action

A

Flexes and adducts hand

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20
Q

Flexor digitorum superficialis origin

A

Common flexor tendon (medial epicondyle of humerus)

Radius

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21
Q

Flexor digitorum superficialis insertion

A

Digits 2-5, middle phalanges

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22
Q

Flexor digitorum superficialis innervation

A

Median nerve (direct, superficial compartment)

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23
Q

Flexor digitorum superficialis action

A

Flexes hand and MP/PIP joints of digits 2-5

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24
Q

Flexor pollicis longus origin

A

Radius, interosseous membrane

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25
Q

Flexor pollicis longus insertion

A

Distal phalanx of thumb

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26
Q

Flexor pollicis longus innervation

A

Anterior interosseous branch (median)

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27
Q

Flexor pollicis longus action

A

Flexes MP/IP joints of thumb

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28
Q

Flexor digitorum profundus origin

A

Ulna, interosseous membrane

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29
Q

Flexor digitorum profundus insertion

A

Digits 2-5, distal phalanges

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30
Q

Flexor digitorum profundus innervation

A

lateral half: 1/2 anterior interosseous (median)

medial 1/2: ulnar nerve

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31
Q

Flexor digitorum profundus action

A

Flexes hand and MP/DIP joins of digits 2-5

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32
Q

Pronator quadratus origin

A

Distal shaft of ulna

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33
Q

Pronator quadratus insertion

A

Distal shaft of radius

34
Q

Pronator quadratus innervation

A

Anterior interosseous (median)

35
Q

Pronator quadratus action

A

Pronates forearm

36
Q

Extensor digitorum origin

A

Common extensor tendon (lateral epicondyle)

37
Q

Extensor digitorum insertion

A

Digits 2-5 (extensor expansion)

38
Q

Extensor digitorum innervation

A

Radial nerve (deep branch)

39
Q

Extensor digitorum action

A

Extends wrist and digits 2-5

40
Q

Extensor digiti minimi origin

A

Common extensor tendon (lateral epicondyle)

41
Q

Extensor digiti minimi insertion

A

Digit 5 (extensor expansion)

42
Q

Extensor digiti minimi innervation

A

Radial nerve (deep branch)

43
Q

Extensor digiti minimi action

A

Extends 5th digit

44
Q

Extensor carpi ulnaris origin

A

Common extensor tendon (lateral epicondyle)

45
Q

Extensor carpi ulnaris insertion

A

Metacarpals

46
Q

Extensor carpi ulnaris innervation

A

Radial nerve (deep branch)

47
Q

Extensor carpi ulnaris action

A

Extends and adducts wrist

48
Q

Extensor carpi radialis longus origin

A

Lateral supracondylar ridge

49
Q

Extensor carpi radialis longus insertion

A

Metacarpals

50
Q

Extensor carpi radialis longus innervation

A

Radial nerve (direct)

51
Q

Extensor carpi radialis longus action

A

Extends and abducts wrist

52
Q

Extensor carpi radialis brevis origin

A

Common extensor tendon (lateral epicondyle)

53
Q

Extensor carpi radialis brevis insertion

A

Metacarpals

54
Q

Extensor carpi radialis brevis innervation

A

Radial nerve (direct)

55
Q

Extensor carpi radialis brevis action

A

Extends and abducts wrist

56
Q

Abductor pollicis longus origin

A

Midshaft radius and ulna
Interosseous membrane
(U shaped origin)

57
Q

Abductor pollicis longus insertion

A

1st metacarpal

58
Q

Abductor pollicis longus innervation

A

Posterior interosseous (radial)

59
Q

Abductor pollicis longus action

A

Abducts thumb

60
Q

Extensor pollicis brevis origin

A

Radius (distal shaft)

Interosseous membrane

61
Q

Extensor pollicis brevis insertion

A

Proximal phalanx of thumb

62
Q

Extensor pollicis brevis innervation

A

Posterior interosseous (radial)

63
Q

Extensor pollicis brevis action

A

Extends thumb

64
Q

Extensor pollicis longus origin

A

Ulna (distal shaft)

Interosseous membrane

65
Q

Extensor pollicis longus insertion

A

Distal phalanx of thumb

66
Q

Extensor pollicis longus innervation

A

Posterior interosseous (radial)

67
Q

Extensor pollicis longus action

A

Extends thumb

68
Q

Extensor indicis origin

A

Ulna (distal shaft)

Interosseous membrane

69
Q

Extensor indicis insertion

A

Digit 2 (extensor expansion)

70
Q

Extensor indicis innervation

A

Posterior interosseous (radial)

71
Q

Extensor indicis action

A

Extends index finger

72
Q

Supinator origin

A

Common extensor tendon (lateral epicondyle)

73
Q

Supinator insertion

A

Radius

74
Q

Supinator innervation

A

Radial nerve (deep branch)

75
Q

Supinator action

A

Supinates forearm

Biceps is stronger

76
Q

Radial nerve in forearm

A

Anterior to lateral epicondyle

Sensory/cutaneous:
Arm - post cutaneous of arm
Forearm - posterior cutaneous of forearm
Hand - superficial branch

Muscles:
Radial -> triceps, brachioradialis, carpi radialis
Through supinator
Deep -> digitorum, carpi ulnaris, digiti minimi
Posterior interosseous -> pollicis, indicis

77
Q

Median nerve in forearm

A

Cubital fossa (anterior to medial epicondyle)

Sensory/cutaneous:
Lateral palm, 2-4 digits

Muscles:

  • > superficial (pronator teres, superficialis, palmaris longus, carpi radialis)
  • > anterior interosseous -> deep (digitorum profundus, pollicis, pronator quad)
78
Q

Ulnar nerve in forearm

A

Posterior to medial epicondyle

Cutaneous -
medial hand, 5th+ 1/2 digit?
dorsal cutaneous branch -> dorsal hand

Flexor carpi ulnaris
Medial half of digitorum profundus

79
Q

Arteries of forearm

A

Brachial -> radial and ulnar

Radial (superficial) - beneath brachioradialis

Ulnar (deep) - deep to pronator teres -> 
hand with ulnar nerve
common interosseous branch ->
anterior interosseous
posterior interosseous
80
Q

Carpal tunnel

A

Flexor retinaculum over carpals
Contains median nerve
Ulnar nerve and artery are superficial

HAE (5 decks)

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