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MSK Week 2 > Midterm Anatomy - Nerve Artery O/I Action > Flashcards

Midterm Anatomy - Nerve Artery O/I Action Flashcards

1
Q

Superficial muscles of the back

A 
Latissimus Dorsi
Levator Scapulae
Rhomboid Major
Rhomboid Minor
Trapezius
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2
Q

Lat Dorsi Origin and Insertion

A

Origin: Spines of T7 to sacrum, posterior third of iliac crest, and the lower ribs
Inserts in the humeral intertubercular groove

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3
Q

Lat Dorsi Action

A

Extends and medially rotates the arm

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4
Q

Lat Dorsi innervation

A

Thoracodorsal nerve from C7 and C8

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5
Q

Lat Dorsi Artery

A

Thoracodorsal artery

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6
Q

Levator Scap origin and insertion

A

Origin: Transverse process of C1-C4
Insert: Medial border of scapula from superior angle to the spine

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7
Q

Action of levator Scap

A

Elevates scapula

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8
Q

Innervation of levator scap

A

Dorsal scapular nerve from C5. Upper part of this muscle also receives branches from C3 and C4

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9
Q

Artery for levator scap

A

Dorsal scapular artery

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10
Q

Rhomboid major origin and insertion

A

Origin: Spines of T2-T5
Insert: Medial border of scapula inferior to the spine

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11
Q

Rhomboid major Action

A

Retracts, elevates, and rotates the scapula inferiorly

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12
Q

Innervation of Rhomboid major

A

Dorsal scapular nerve from C5

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13
Q

Artery for Rhomboid major

A

Dorsal scapular artery

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14
Q

Rhomboid minor origin and insertion

A

Origin: Spines of C7 to T1
Insertion: Medial border of scapula at the spine

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15
Q

Action of rhomboid minor

A

Retracts, elevates and rotates the scapula inferiorly

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16
Q

Artery for the rhomboid minor

A

Dorsal scapular

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17
Q

Trapezius origin and insertion

A

Origin: Medial third of superior nuchal line, external occipital protuberance, nuchal ligament, and spinous processes of C7-T12
Insert: Lateral third of clavicle, medial side of acromion and upper crest of the scapular spine

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18
Q

Action of the trapezius

A

Elevates and depresses the scapula, superiorly rotates the scapula and retracts scapula

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19
Q

Innervation of Trapezius

A

Motor: Spinal acessory nerve (XI)
Sensation: C3/C4

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20
Q

Artery for trapezius

A

Transverse cervical artery

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21
Q

Intermediate group of back muscles

A

Serratus posterior inferior

Serratus posterior superior

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22
Q

Origin and Insertion for serratus posterior inferior

A

O: Thoracolumbnar fascia and spines of T11-L2
I: Ribs 9-12

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23
Q

Action of serratus posterior inferior

A

Pulls down the lower ribs

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24
Q

Innervation of the serratus posterior inferior

A

Ventral branches of primary rami from T9-T12

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25
Q

Artery for serratus posterior inferior

A

Subcostal artery, posterior intercostal artery, first two lumbar arteries

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26
Q

O/I for serratus posterior superior

A

O: Nuchal ligament, spines of C7, and T1-T3
I: Ribs 1-4

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27
Q

Action of serratus posterior superior

A

Elevates upper ribs

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28
Q

Nerve for serratus posterior superior

A

Ventral branches of primary rami from T1-T4

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29
Q

Artery for serratus posterior superior

A

Posterior intercostal arteries

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30
Q

Deep back muscles

A

Splenius capitis and cervicis

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31
Q

Difference between splenius capitis and cervicis?

A

Everything is the same except where they insert. Capitis inserts on the Mastoid process and lateral end of the superior nuchal line and thecervis inserts on the posterior tubercles of the transverse processes of C1-C3

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32
Q

Origin of splenius muscles

A

Nuchal ligament and spines of C7-T6

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33
Q

Action of splenius muscles

A

Extends and laterally bends the neck and head as well as rotates the head to the same side

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34
Q

Innervation of splenius muscles

A

Dorsal primary rami of C2-C6

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35
Q

Artery for splenius muscles

A

Deep cervical artery and posterior intercostal arteries

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36
Q

Intermediate layer of Back muscles

A

Erector Spinae muscles

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37
Q

What are the erector spinae muscles

A

Iliocostalis, longissimus and the spinalis and in all purposes, the semispinalis

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38
Q

O/I of the illiocostalis

A

O: Iliac crest and sacrum
I: Ribs

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39
Q

Action of the erector spinae muscles

A

Extends and laterally bends the trunck and neck

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40
Q

Innervation of the iliocostalis

A

Dorsal primary rami of C4-S5

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41
Q

Arteries for erector spinae muscles

A

Deep cervical arteries, posterior intercostal arteries, subcostal arteries and lumbar arteries

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42
Q

O/I for longissimus

A

Origin: Transverse process of lower vertebrae
I: Transverse process of superior vertebrae AND mastoid process

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43
Q

Nerve for longissimus

A

Dorsal primary rami of spinal nerves C1-S1

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44
Q

Spinalis O/I

A

O: Spinous processes of inferior vertebrae
I: Spinous processes of superior vertebrae and base of the skull

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45
Q

Innervation of spinalis

A

Dorsal primary rami of spinal nerves C2-L3

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46
Q

O/I of semispinalis

A

O: Transverse processes of C7-T12
I: Capitis: Between nuchal lines of the skull
Thoracis/Cervicis: Spines of C3 to C7

47
Q

Action of semispinalis

A

Extends and laterally bends the trunk AND rotates trunk to the opposite side

48
Q

Innervation of Semispinalis

A

Dorsal primary rami of C1-T12

49
Q

Artery for Semispinalis

A

Same as the other erector spinae muscles

50
Q

Suboccipital triangle?

A

Obliquus capitis inferior and superior and rectus capitis posterior major

51
Q

O/I of obliquus capitis inferior

A

O: Spine of the axis
I: Transverse process of atlas

52
Q

Action of the obliquus capitis inferior

A

Rotates head to the same side

53
Q

Nerve for all suboccipital muscles?

A

Suboccipital nerve (DPR from C1)

54
Q

Artery for all suboccipital muscles

A

Occippital artery

55
Q

O/I for obliquus capitis superior

A

O: Transverse process of atlas
I: Above inferior nuchal line

56
Q

Action of obliquus capitis superior

A

Extends the head and rotates the head to the same side

57
Q

O/I for rectus capitis posterior major

A

O: Spinous process of axis
I: Lateral portion of Inferior nuchal line

58
Q

Action of rectus capitis posterior major

A

Extends the head and rotates it to the same side

59
Q

O/I for rectus capitis posterior minor

A

O: Posterior tubercle of the atlas
I: Medial portion of inferior nuchal line

60
Q

Action of rectus capitis posterior minor

A

Extends the head

61
Q

O/I for deltoid

A

O: Lateral third of clavicle, acromion and spine of scapula
I: Deltoid tuberosity of humerus

62
Q

Action of deltoid

A

Abducts the arm, extend, flex, medially and laterally rotate the arm

63
Q

Nerve of deltoid

A

Axillary nerve

64
Q

Artery from the deltoid

A

Posterior circumflex humeral artery

65
Q

O/I supraspinatous

A

O: Supraspinous fossa
I: Greater tuberlce of the humerus

66
Q

Action of supraspinatous

A

First 10-20 degrees of abduction of the arm

67
Q

Nerve for supraspinatous

A

Suprascapular nerve

68
Q

Artery for supraspinatous

A

Suprascapular artery

69
Q

O/I for infraspinatous

A

O: Infraspinatous fossa
I: Greater tubercle of humerus

70
Q

Action of infraspinatous

A

Laterally rotates the arm

71
Q

Nerve for infraspinatous

A

Suprascapular nerve

72
Q

Artery for infraspinatous

A

suprascapular artery

73
Q

Teres minor O/I

A

O: Upper lateral border of scapula
I: Greater tubercle of the humerus

74
Q

Action of teres minor

A

Laterally rotates the arm

75
Q

Nerve for teres minor

A

Axillary nerve

76
Q

Artery for teres minor

A

Circumflex scapular artery

77
Q

Teres Major O/I

A

O: Dorsal surface of inferior angle of scapula
I: Lesser tubercle of humerus

78
Q

Action of teres major

A

Adducts the arm and medially rotates it

79
Q

Nerve for teres major

A

Lower Subscap nerve

80
Q

Artery for teres major

A

Circumflex scapular artery

81
Q

Subscapularis O/I

A

O: Subscpular fossa of scapula
I: Lesser tubercle of the humerus

82
Q

Action of subscapularis

A

Medially rotates the arm

83
Q

Nerve of subscapularis

A

Upper and lower Subscap nerve

84
Q

Artery for subscapularis

A

Subscapular artery

85
Q

Pec Major O/I

A

O: Medial half of clavicle, manubrium, body of sternum, ribs 2-6
I: Greater tubercle of humerus

86
Q

Action of Pec major

A

Flexes and adducts the arm

87
Q

Nerve for pec major

A

Medial and lateral pectoral nerves

88
Q

Artery for pec major

A

Pectoral branch of the thoracoacromial trunk

89
Q

Pec minor O/I

A

O: Ribs 3-5
I: Coracoid process of the scapula

90
Q

Action of pec minor

A

Draws scapula forward, medial and down

91
Q

Nerve for pec minor

A

Medial pectoral nerve

92
Q

Artery for pec minor

A

Pectoral branch of the thoracoacromial trunk

93
Q

Serratus anterior O/I

A

O: Ribs 1-8
I: Medial border of scapula

94
Q

Serratus anterior action

A

Draws scapula forward and rotate scapula superiorly

95
Q

Nerve for serratus anterior

A

Long Thoracic

96
Q

Artery for serratus anterior

A

Lateral thoracic artery

97
Q

Biceps brachii O/I

A

O: Short head on the coracoid process of the scapula, the long head on the supraglenoid tubercle of the scapula
I: Radial tuberosity

98
Q

Action of biceps brachii

A

Flexes the forearm and supinates the the arm. The long head also flexes the arm

99
Q

Nerve for biceps brachii

A

Musculocutaneous

100
Q

Artery for biceps brachii

A

Brachial artery

101
Q

Brachialis O/I

A

O: Anterior surface of lower one half of the humerus
I: Coranoid process of the ulna

102
Q

Action of brachialis

A

Flexes forearm

103
Q

Nerve of brachialis

A

Musculocutaneous nerve

104
Q

Artery for brachialis

A

Brachial artery

105
Q

Coracobrachialis O/I

A

O: Coracoid process of the scapula
I: Medial middle of humerus

106
Q

Action of coracobracialis

A

Flexion and adduction of the arm

107
Q

Nerve for coracobrachialis

A

Musculocutaneous nerve

108
Q

Artery for coracobrachialis

A

Brachial artery

109
Q

Triceps O/I

A

O: Long head on the infraglenoid tubercle of scapula, lateral head on the posterolateral humerus, medial head on the posteromedial inferior surface of humerus

I: Olecranon process

110
Q

Action of triceps

A

Extends the forearm. Thel ong head extends and adducts the arm

111
Q

Nerve for triceps

A

Radial

112
Q

Artery for triceps

A

Deep Brachial profundus artery

113
Q

Brachioradialis O/I

A

O: Lateral supracondyle of humerus
I: Styloid process of radius

114
Q

Action of brachioradialis

A

Flexes elbow and assists in pronation/supination

MSK Week 2 (28 decks)

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