Exam 5 Upper Extremity 52X Flashcards Preview

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Flashcards in Exam 5 Upper Extremity 52X Deck (86)
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61

Which muscles are responsible for supination?

-Supinator muscle
-Biceps brachii
-Brachioradialis

62

What are the superficial veins of the forearm?

Cephalic
Basilic
Median Antebrachial

63

The radial pulse is palpated where the radial artery lies between the tendons of what two muscles?

Flexor carpi radialis
Abductor pollicis longus

64

The wrist and hand consist of how many bones and muscles?

28 bones
19 intrinsic muscles
20 extrinsic muscles

65

What is formed by the antebrachial fascia thickening posteriorly over the distal ends of the radius and ulna?

Extensor retinaculum

66

The extensor retinaculum function and prevents what?

Retains extensor tendons in position
Prevents bowstringing

67

The flexor retinaculum extends from where to where?

Across Wrist: Scaphoid and trapezium bones on radial side to hamate and pisiform bone on ulnar side

68

The Flexor retinaculum forms what structure?

Carpal tunnel

69

What lies outside the Flexor retinaculum (Carpal tunnel) but under the palmar carpal ligament?

Tendon of Palmaris longus muscle
Ulnar nerve
Ulnar artery

70

What encompasses the tendons within the flexor retinaculum?

Synovial sheath

71

What transmit through the flexor retinaculum?

Tendons of:
-Flexor pollicis longus
-Flexor digitorum superficialis
-Flexor digitorum profundus

72

What other significant items lies within the carpal tunnel?

Median nerve

73

What results from any lesion that significantly reduces the size of the carpal tunnel?

Carpal tunnel syndrome

74

Carpal tunnel syndrome affects what portion of the hand for cutaneous sensation and which part for motor function?

Cutaneous (Sensory): Lateral 3 and one-half digits (thumb to lateral aspect of middle finger)
Motor: Thenar muscle coordination. unable to oppose the thumb

75

What is Tinel sign often referred to?

Distal tingling on percussion

76

What the name of the extension of the tendon of the palmaris longus muscle, that is most superficial structure of the hand and which fibers attach to overlying skin at the palmer creases, goes deep to fascia, metacarpals, and phalanges?

Palmar aponeurosis

77

What are the intrinsic muscles of the hand?

Thenar muscles
Hypothenar muscles
Adductor muscle
Lumbrical muscles
Interosseus muscles

78

What are the muscles of the thenar compartment and together form the Thenar eminence?

Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis

79

What is the name of the muscle that is fan shaped, adducts the thumb, providing power to the grip?

Adductor pollicis muscle

80

What are the muscles of the Hypothenar compartment that together form the hypothenar eminence?

Abductor digiti minimi
Flexor digiti minimi brevis
Opponens digiti minimi

81

Which nerve innervates the muscles of the hypothenar compartment?

Ulnar nerve

82

Which nerve innervate the muscles of the Thenar compartment?

Recurrent branch of median nerve (motor branch)

83

What is the name of the muscles that have a wormlike appearance and attach proximally to tnedons of the flexor digitorum porfundus and distally to parts of the extensor digitorum tendon called extensor expansions?

Lumbrical muscles

84

Which Lumbrical muscles are innervated by the median nerve and which by the ulnar nerve?

Median: Lateral two lumbrical muscles
Ulnar: Medial two lumbrical muscles

85

What function do the lumbrical muscles serve?

Flex the digits at the metacarpophalangeal Joint (MCP joint) and extend the interphalangeal joints

86

Which lumbricals are unipennate and which are bipennate?

Unipennate: 1st and 2nd
Bipennate: 3rd and 4th