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Musculoskeletal (MEDI) 203 > Muscles of Upper Limb > Flashcards

Muscles of Upper Limb Flashcards

1
Q

Innervation of Deltoid

A

Axillary nerve

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2
Q

Innervation of Pectoralis Major

A

Lateral & medial pectoral nerves, from brachial plexus (branching off from lateral & medial cords)

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3
Q

Innervation of Latissimus Dorsi

A

Thoracodorsal nerve, from brachial plexus (branching off from posterior cord)

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4
Q

Innervation of Supraspinatus

A

Suprascapular nerve, from brachial plexus (C5 & C6, branching off from the superior trunk)

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5
Q

Innervation of Infraspinatus

A

Suprascapular nerve, from the brachial plexus (C5 & C6, branching off from superior trunk)

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6
Q

Innervation of Teres Major

A

Inferior subscapular nerve, from brachial plexus (branching off from posterior cord)

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7
Q

Innervation of Teres Minor

A

Axillary nerve

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8
Q

Innervation of Subscapularis

A

Superior & inferior subscapular nerves, from brachial plexus (branching off from posterior cord)

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9
Q

Innervation of Serratus Anterior

A

Long thoracic nerve

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10
Q

Innervation of Biceps Brachii

A

Musculocutaneous nerve

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11
Q

Innervation of Coracobrachialis

A

Musculocutaneous nerve

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12
Q

Innervation of Triceps Brachii

A

Radial nerve

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13
Q

Innervation of Pectoralis Minor

A

Medial pectoral nerve

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14
Q

Innervation of Levator Scapulae

A

Dorsal scapular nerve, C3 & C4

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15
Q

Innervation of Rhomboid Major & Minor

A

Dorsal scapular nerve

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16
Q

Innervation of Trapezius

A

Spinal root of accessory nerve, C3 & C4

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17
Q

Innervation of Subclavius

A

Subclavian nerve (branching off from superior trunk)

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18
Q

Innervation of Anconeus

A

Radial nerve

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19
Q

Innervation of Brachioradialis

A

Radial nerve

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20
Q

Innervation of Brachialis

A

Musculocutaneous nerve

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21
Q

Innervation of Abductor Digiti Minimi

A

Deep branch of ulnar nerve

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22
Q

Innervation of Abductor Pollicis Brevis

A

Median nerve (recurrent branch)

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23
Q

Innervation of Abductor Pollicis Longus

A

Radial nerve (posterior interosseous)

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24
Q

Innervation of Adductor Pollicis

A

Ulnar nerve (deep branch)

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25
Q

Innervation of Extensor Carpi Radialis Brevis

A

Radial nerve (deep branch)

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26
Q

Innervation of Extensor Carpi Radialis Longus

A

Radial nerve

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27
Q

Innervation of Extensor Carpi Ulnaris

A

Radial nerve (posterior interosseous)

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28
Q

Innervation of Extensor Digiti Minimi

A

Radial nerve (posterior interosseous)

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29
Q

Innervation of Extensor Digitorum

A

Radial nerve (posterior interosseous)

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30
Q

Innervation of Extensor Indicis

A

Radial nerve (posterior interosseous)

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31
Q

Innervation of Extensor Pollicis Brevis

A

Radial nerve (posterior interosseous)

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32
Q

Innervation of Extensor Pollicis Longus

A

Radial nerve (posterior interosseous)

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33
Q

Innervation of Flexor Carpi Radialis

A

Median nerve

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34
Q

Innervation of Flexor Carpi Ulnaris

A

Ulnar nerve

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35
Q

Innervation of Flexor Digitorum Profundus

A

Medial part: ulnar nerve

Lateral part: median nerve

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36
Q

Innervation of Flexor Digitorum Superficialis

A

Median nerve

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37
Q

Innervation of Flexor Pollicis Brevis

A

Median nerve (recurrent branch)

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38
Q

Innervation of Flexor Pollicis Longus

A

Median nerve

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39
Q

Innervation of Dorsal Interosseous Muscles

A

Ulnar nerve (deep branch)

40
Q

Innervation of Palmar Interosseous Muscles

A

Ulnar nerve (deep branch)

41
Q

Innervation of Opponens Digiti Minimi

A

Ulnar nerve (deep branch)

42
Q

Innervation of Opponens Pollicis

A

Median nerve (recurrent branch)

43
Q

Innervation of Palmaris Longus

A

Median nerve

44
Q

Innervation of Pronator Quadratus

A

Median nerve

45
Q

Innervation of Pronator Teres

A

Median nerve

46
Q

Innervation of Supinator

A

Radial nerve (deep branch)

47
Q

Muscles innervated by Median nerve

A

Anterior Compartment of Forearm:

  • Pronator Teres
  • Flexor Carpi Radialis
  • Palmaris Longus
  • Flexor Digitorum Superficialis
  • Flexor Digitorum Profundus (lateral half only)
  • Pronator Quadratus
  • Opponens Pollicis (recurrent branch)
  • Flexors Pollicis Longus & Brevis (recurrent branch)
  • Abductor Pollicis Brevis
48
Q

Muscles innervated by Radial nerve

A
  • Triceps Brachii
  • Anconeus
  • Brachioradialis
  • Abductor Pollicis Longus
  • Extensors Carpi Radialis Longus & Brevis
  • Extensor Carpi Ulnaris
  • Extensor Digiti Minimi
  • Extensor Digitorum
  • Extensor Indicis
  • Extensors Pollicis Brevis & Longus
  • Supinator
49
Q

Muscles innervated by Ulnar nerve

A
  • Adductor Pollicis (deep branch)
  • Flexor Carpi Ulnaris
  • Flexor Digitorum Profundus (medial half only)
  • Dorsal & Palmer Interosseous nerves (deep branch)
  • Opponens Digiti Minimi (deep branch)
  • Extensor Digiti Minimi
  • Flexor Digiti Minimi
50
Q

Muscles innervated by Musculocutaneous nerve

A
  • Biceps Brachii
  • Coracobrachialis
  • Brachialis
51
Q

Action of Deltoid

A

Abductor of the arm
Lateral & medial rotation of the arm
Flexion & extension of the arm

52
Q

Action of Infraspinatus

A

Lateral rotation of arm

53
Q

Action of Latissimus Dorsi

A

Adduction of arm
Medial rotation
Extension at shoulder

54
Q

Action of Pectoralis Major

A

Adduction of arm
Flexion
Medial rotation

55
Q

Action of Serratus Anterior

A

Protraction & retraction of scapula

56
Q

Action of Subscapularis

A

Medial rotation

57
Q

Action of Supraspinatus

A

Abduction of arm

58
Q

Action of Teres Major

A

Medial rotation of arm

Adduction

59
Q

Action of Teres Minor

A

Lateral rotation of arm

60
Q

Action of Anconeus

A

Extend forearm

Adduct arm

61
Q

Action of Biceps Brachii

A

Flex the arm
Flex forearm
Supinate forearm

62
Q

Action of Brachialis

A

Flex forearm

63
Q

Action of Brachioradialis

A

Flex forearm

64
Q

Action of Pronator Teres

A

Pronate forearm

65
Q

Action of Supinator

A

Extend forearm

Supinate forearm

66
Q

Action of Triceps Brachii

A

Extend forearm

Adduct arm

67
Q

Action of Abductor Digiti Minimi

A

Abduct little finger

68
Q

Action of Abductor Pollicis Brevis

A

Abduct thumb (helps opposition)

69
Q

Action of Abductor Pollicis Longus

A

Abduct thumb

Extend thumb at carpometacarpal joint

70
Q

Action of Adductor Pollicis

A

Adduct thumb

Rotate thumb medially

71
Q

Action of Coracobrachialis

A

Helps flex & adduct arm

72
Q

Action of Extensors Carpi Radialis Brevis & Longus

A

Extend & abduct hand at wrist joint

73
Q

Action of Extensor Carpi Ulnaris

A

Extend & adduct hand at wrist joint

74
Q

Action of Extensor Digiti Minimi

A

Extend little finger at metacarpo- & inter-phalangeal joints

75
Q

Action of Extensor Digitorum

A

Extend the medial 4 fingers at metacarpophalangeal joints

Extend hand at wrist joint

76
Q

Action of Extensor Pollicis Brevis

A

Extend thumb at carpometacarpal joint

77
Q

Action of Extensor Pollicis Longus

A

Extend thumb at carpometacarpal & interphalangeal joitns

78
Q

Action of Flexors Carpi Radialis & Ulnaris

A

Flex & adduct hand at wrist

79
Q

Action of Flexor Digiti Minimi Brevis

A

Flex proximal phalanx of little finger

80
Q

Action of Flexor Digitorum Profundus

A

Flex distal phalanges of medial 4 fingers

Assist with flexion of hand

81
Q

Action of Flexor Digitorum Superficialis

A

Flex middle phalanges of medial 4 fingers

82
Q

Action of Flexors Pollicis Brevis & Longus

A

Flex thumb

83
Q

Action of Dorsal Interosseous Muscles
Action of Palmar Interosseous Muscles (digits 1-3)
PAD DAB

A

Abduct digits
Flex metacarpophalangeal joints (with lumbricals)
Extend interphalangeal joints

84
Q

Action of Opponens Digiti Minimi

A

Helps with opposition of little finger to thumb (lateral rotation)

85
Q

Action of Opponens Pollicis

A

Helps with opposition of little finger to thumb (medial rotation)

86
Q

Action of Palmaris Longus

A

Flex hand at wrist

Tense palmar aponeurosis

87
Q

Muscles innervated by Dorsal Scapular nerve

A
  • Levator Scapulae

- Rhomboid Major & Minor

88
Q

Muscles innervated by Axillary nerve

A
  • Deltoid

- Teres Minor

89
Q

Innervation of Extensors Pollicis Longus & Brevis

A

Radial nerve

90
Q

List of intrinsic muscles of the hand

A 
Thenar muscles:
- abductor pollicis brevis
- flexor pollicis brevis
- opponens pollicis
Hypothenar muscles:
- abductor digiti minimi
- flexor digiti minimi
- opponens digiti minimi
Dorsal & Palmar Interosseous
Lumbricals
Adductor Pollicis
Palmaris Brevis
91
Q

List of extrinsic muscles of the hand

A 
Flexor Carpi Radialis
Palmaris Lungus
Flexor Carpi Ulnaris
Flexor Digitorum Superficialis
Flexor Digitorum Profundus
Flexor Pollicis Longus
Extensor Carpi Radialis Longus & Brevis
Extensor Digitorum
Extensor Digiti Minimi
Extensor Carpi Ulnaris
Abductor Pollicis Longus
Extensor Pollicis Longus & Brevis
Extensor Indicis
92
Q

Origin & insertion of biceps brachii

A
  1. Coracoid process. 2. Supraglenoid tubercle

Radial tuberosity

93
Q

Origin & insertion of brachialis

A

Anterior shaft humerus

Coronoid process & tuberosity of ulna

94
Q

Origin & insertion of triceps brachii

A
  1. Infraglenoid tubercle. 2. Inferior 2/3 humerus. 3. Proximal posterior humerus

Olecranon

95
Q

Origin & insertion of brachioradialis

A

Lateral supracondylar ridge

Styloid process radius

96
Q

Origin & insertion of pronator teres

A
  1. Medial epicondyle & supracondylar ridge. 2. Coronoid process

Middle lateral radius

97
Q

Origin & insertion of supinator

A

Lateral epicondyle

Musculoskeletal (MEDI) 203 (11 decks)

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