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MSK Test 1 Sergiu > Upper Extremities Myology > Flashcards

Upper Extremities Myology Flashcards

1
Q

Pectoralis Major M. action

A
  1. Adduct and medially rotate the Humerus

2. Protracts and Depresses the Scapula

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2
Q

Innervation and blood supply of Pectoralis major M.

A

Lateral and medical Pectoral N.

Thoracoacromial trunk

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3
Q

Pectoralis Minor M. action

A

Stabilizes Scapula by protracting and depressing it against the thoracic wall.

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4
Q

Innervation and blood supply of Pectoralis Minor M.

A

Medial Pectoral N.

Thoracoacromial trunk.

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5
Q

Subclavius M. action

A

Positions and depresses the clavicula

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6
Q

Innervation of Subclavius M.

A

Nerve to the Subclavius M.

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7
Q

Serratus Anterior M. action(2)

A
  1. Protracts the Scapula (stabilizing it against the thoracic wall).
  2. Rotates the Glenoid Cavity superiorly.
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8
Q

Innervation of Serratus Anterior M.

A

Long Thoracic N.

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9
Q

Supraspinatus M. action(2)

A
  1. Abducts the Humerus

2. Hold the Humeral Head in the Glenoid Cavity.

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10
Q

Innervation of Supraspinatus M.

A

Suprascapular N.

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11
Q

Infraspinatus M. action (2)

A
  1. Laterally rotates the Humerus

2. Hold the Humeral head in the Glenoid Cavity.

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12
Q

Innervation of Infraspinatus M.

A

Suprascapular N.

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13
Q

Teres Minor M. action (2)

A
  1. Laterally rotates the Humerus.

2. Holds the Humeral head in the Glenoid Cavity.

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14
Q

Innervation of Teres Minor M.

A

Axillary N.

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15
Q

Teres Major M. action(2)

A

Adducts and medially rotates the humerus.

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16
Q

Innervation of Teres Major M.

A

Lower Subscapular N.

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17
Q

Deltoid M. action: 3 parts:3 different actions

A
  1. Anterior part: Flex and medially rotates the Humerus
  2. Middle Part: Abduct the Humerus
  3. Posterior Part: Extend and Laterally rotate the Humerus
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18
Q

Innervation of Deltoid M.

A

Axillary N.

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19
Q

Subscapularis M. action(2)

A
  1. Medially rotate and adduct the Humerus

2. Holds the Humeral Head in the Glenoid Cavity.

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20
Q

Innervation of Subscapularis M.

A

Upper and Lower Subscapular N.

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21
Q

What are the 4 Rotator cuff muscles?

A

SITS

  1. Supraspinatus
  2. Infraspinatus
  3. Teres Minor
  4. Subscapularis
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22
Q

What makes up the Triangular Space?

A

Teres Minor M.
Teres Major M.
Long head of the Triceps Brachii M.

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23
Q

What makes up the Quadrangular Space?

A

Teres Minor M.
Teres Major M.
Long and Lateral Head of the Triceps Brachii M.

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24
Q

Coracobrachialis M. action (2)

A

Flex and Adduct the Humerus

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25
Q

Innervation of Coracobrachialis M.

A

Musculocutaneous N.

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26
Q

Biceps Brachii M. action (3)

A
  1. Flex the Humerus
  2. Flex the supine Forearm and supinate the forearm.
  3. Short Head resists dislocation of the shoulder.
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27
Q

Innervation of Biceps Brachii M.

A

Musculocutaneous N.

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28
Q

Brachialis M. action

A

Flex the forearm.

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29
Q

Innervation of Brachialis M.

A

Musculocutaneous N.

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30
Q

Triceps brachii M. Action (2)

A
  1. Extend the forearm

2. Long head resist dislocation of the shoulder.

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31
Q

Innervation of Triceps brachia.

A

Radial N.

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32
Q

Anconeus M. action (2)

A

with the Triceps Brachii M. extends the forearm, stabilizes the elbow joint.

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33
Q

Innervation of the Anconeus M.

A

Radial N.

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34
Q

Pronator Teres M. Action (2)

A

Pronate and flex the forearm.

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35
Q

Innervation of Pronator Teres M.

A

Median N.

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36
Q

Flexor Carpi Radialis M. action (2)

A
  1. Flex the forearm

2. Flex and Abduct Hand at wrist.

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37
Q

Innervation of Capri Radialis M.

A

Median N.

38
Q

Flexor Carpi Ulnaris M. action (2)

A
  1. Flex forearm.

2. Flex and abduct hand at wrist.

39
Q

Innervation of Flexor Carpi Ulnaris M.

A

Ulnar N.

40
Q

Palmaris Longus M. action (2).

A
  1. Flex forearm

2. Flex hand and tenses the palmar aponeurosis.

41
Q

Innervation of Palmaris Longus M.

A

Median N.

42
Q

Flexor Digitorum Superficial M. action (3)

A
  1. Flex forearm
  2. Flex hand at the wrist.
  3. Flex Proximal and Intermediate Phalanges of Digits 2-5 at the Metacarpolphalangeal and Proximal Interphalangeal joints.
43
Q

Innervation of Flexor Digitorum Superficial M.

A

Median N.

44
Q

Flexor Digitorum Profundus M. action (2)

A
  1. Flex hand at wrist.

2. Flex all the phalanges of digits 2-5

45
Q

Flexor Pollicis Longus M. action (2)

A
  1. Flex hand

2. Flex and abduct 1st metacarpal

46
Q

Innervation of Flexor Pollicis Longus M.

A

Anterior Interosseous N.

47
Q

Pronator Quadratus M. action (2)

A
  1. Pronate forearm.

2. Deep fibers hold the Ulna and Radius together.

48
Q

Innervation of Pronator Quadratus M.

A

Anterior Interosseous N.

49
Q

Brachiocardialis M. action

A

Flex forearm

50
Q

Innervation of Brachiocardialis M.

A

Radial N.

51
Q

Extensor Carpi Radialis Longus M. action (2)

A

Extends and abducts hand at wrist.

52
Q

Innervation of Carpi Radialis Longus M.

A

Radial N.

53
Q

Extensor Carpi Radialis Brevis M. action (2)

A

Extend and abducts hand at wrist.

54
Q

Innervation of Carpi Radialis Brevis M.

A

Deep Radial N.

55
Q

Extensor Digitorum M. action (2)

A
  1. Extends hand at wrist.

2. extends all phalanges of digits 2-5

56
Q

Innervation of Extensor Digitorum M.

A

Posterior Interosseous N.

57
Q

Extensor Digiti Minimi M. action

A

Extends all phalanges of digit 5.

58
Q

Innervation of Extensor Digiti Minimi M.

A

Posterior Interosseous N.

59
Q

Extensor Carpi Ulnaris M. action (2)

A

Extends and abducts hand at wrist.

60
Q

Innervation of Carpi Ulnaris M.

A

Posterior Interosseous N.

61
Q

Supinator M. action

A

Supinate forearm

62
Q

Innervation of Supinator M.

A

Deep Radial N.

63
Q

Extensor Indicis M. action (2)

A
  1. Extends hand at the wrist.

2. extends 2nd digit.

64
Q

Innervation of Extensor Indicis M.

A

Posterior Interosseous N.

65
Q

Abductor Pollicis Longus M. action

A

Abducts hand at wrist and abducts the pollux at the Carpometacarpal Joint.

66
Q

Innervation of Abductor Pollicis Longus M.

A

Posterior Interosseous N.

67
Q

Extensor Pollicis Brevis M. action (2)

A
  1. Abducts hand

2. Extends 1st metacarpal and proximal phalanges of the Pollux at the Carpometacarpal and Metacarpophalangeal joints.

68
Q

Innervation of Extensor Pollicis Brevis M.

A

Posterior Interosseous N.

69
Q

Extensor Pollicis Longus M. action (2)

A
  1. Abducts hand at the wrist.

2. Extends 1st Metacarpal, Proximal and Distal Phalanges of the Pollux(thumb).

70
Q

Innervation of Extensor Pollicis Longus M.

A

Posterior Interosseous N.

71
Q

Abductor Pollicis Brevis M. action (2)

What kind of muscle?

A

Abducts Pollux, aids in Opposition.

It is a Thenar Muscle.

72
Q

Innervation of Abductor Pollicis Brevis M.

A

Recurrent branch of Median N.

73
Q

Flexor Pollicis Brevis M. action

A

Flex 1st metacarpal and proximal phalanges of the Pollux.

74
Q

Innervation of Flexor Pollicis Brevis M. (2)

A

Superficial Head: Recurrent Branch of the Median N.

Deep Head: Deep Ulnar N.

75
Q

Opponens Pollicis M. action

A

Oppose Pollux

76
Q

Innervation of Pollicis M.

A

Recurrent Branch of the median N.

77
Q

Adductor Pollicis M. action

A

Adduct Pollux

78
Q

Innervation of Adducotr Pollicis M.

A

Deep Ulnar N.

79
Q

Abductor Digiti Minimi M. action

A

Abducts 5th digit.

80
Q

Innervation of Abductor Digiti Minimi M.

A

Deep ulnar N.

81
Q

Flexor Digiti Minimi Brevis M. action

A

Flex proximal phalanx of 5th digit.

82
Q

Innervation of Flexor Digiti Minimi Brevis M.

A

Deep Ulnar N.

83
Q

Opponens Digiti Minimi M. action

A

Oppose 5th digit.

84
Q

Innervation of Opponens Digiti Minimi M.

A

Deep Ulnar N.

85
Q

1st and 2nd Lumbrical M. action (2)

A
  1. Flex Proximal Phalanges of the 2nd and 3rd Digits at the Metacarpophalangeal Joint.
  2. Extend Intermediate and Distal Phalanges of the 2nd and 3rd digits by tightening extensor expansion.
86
Q

Innervation of 1st and 2nd Lumbrical M.

A

Median N.

87
Q

3rd and 4th Lumbrical M. action (2)

A
  1. Flex proximal phalanges of the 4th and 5th Digits at the Metacarpophalangeal Joint
  2. Extend Intermediate and Distal Phalanges of the 4th and 5th Digits by tightening extensor expansion.
88
Q

Dorsal Interossei M. action (3)

A
  1. Abduct digits 2-4 (DAB)
  2. Flex proximal phalanges at the metacarpophalangeal joint
  3. Extend Intermediate and Distal Phalanges by tightening extensor expansion.
89
Q

Palmar Interosseous M. action (2)

A
  1. Adduct 2nd, 4th, and 5th Digits at the metacarpophalangeal Joint (PAD)
  2. Extend Intermediate and Distal Phalanges of the 2nd, 4th, and 5th Digits by tightening extensor expansion.
90
Q

Innervation of Palmar Interosseous M.

A

Deep Ulnar N.

91
Q

Innervation of Dorsal Interossei M.

A

Deep Ulnar N.

MSK Test 1 Sergiu (6 decks)

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