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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
Artery for serratus posterior inferior
Subcostal artery, posterior intercostal artery, first two lumbar arteries
26
O/I for serratus posterior superior
O: Nuchal ligament, spines of C7, and T1-T3 I: Ribs 1-4
27
Action of serratus posterior superior
Elevates upper ribs
28
Nerve for serratus posterior superior
Ventral branches of primary rami from T1-T4
29
Artery for serratus posterior superior
Posterior intercostal arteries
30
Deep back muscles
Splenius capitis and cervicis
31
Difference between splenius capitis and cervicis?
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
32
Origin of splenius muscles
Nuchal ligament and spines of C7-T6
33
Action of splenius muscles
Extends and laterally bends the neck and head as well as rotates the head to the same side
34
Innervation of splenius muscles
Dorsal primary rami of C2-C6
35
Artery for splenius muscles
Deep cervical artery and posterior intercostal arteries
36
Intermediate layer of Back muscles
Erector Spinae muscles
37
What are the erector spinae muscles
Iliocostalis, longissimus and the spinalis and in all purposes, the semispinalis
38
O/I of the illiocostalis
O: Iliac crest and sacrum I: Ribs
39
Action of the erector spinae muscles
Extends and laterally bends the trunck and neck
40
Innervation of the iliocostalis
Dorsal primary rami of C4-S5
41
Arteries for erector spinae muscles
Deep cervical arteries, posterior intercostal arteries, subcostal arteries and lumbar arteries
42
O/I for longissimus
Origin: Transverse process of lower vertebrae I: Transverse process of superior vertebrae AND mastoid process
43
Nerve for longissimus
Dorsal primary rami of spinal nerves C1-S1
44
Spinalis O/I
O: Spinous processes of inferior vertebrae I: Spinous processes of superior vertebrae and base of the skull
45
Innervation of spinalis
Dorsal primary rami of spinal nerves C2-L3
46
O/I of semispinalis
O: Transverse processes of C7-T12 I: Capitis: Between nuchal lines of the skull Thoracis/Cervicis: Spines of C3 to C7
47
Action of semispinalis
Extends and laterally bends the trunk AND rotates trunk to the opposite side
48
Innervation of Semispinalis
Dorsal primary rami of C1-T12
49
Artery for Semispinalis
Same as the other erector spinae muscles
50
Suboccipital triangle?
Obliquus capitis inferior and superior and rectus capitis posterior major
51
O/I of obliquus capitis inferior
O: Spine of the axis I: Transverse process of atlas
52
Action of the obliquus capitis inferior
Rotates head to the same side
53
Nerve for all suboccipital muscles?
Suboccipital nerve (DPR from C1)
54
Artery for all suboccipital muscles
Occippital artery
55
O/I for obliquus capitis superior
O: Transverse process of atlas I: Above inferior nuchal line
56
Action of obliquus capitis superior
Extends the head and rotates the head to the same side
57
O/I for rectus capitis posterior major
O: Spinous process of axis I: Lateral portion of Inferior nuchal line
58
Action of rectus capitis posterior major
Extends the head and rotates it to the same side
59
O/I for rectus capitis posterior minor
O: Posterior tubercle of the atlas I: Medial portion of inferior nuchal line
60
Action of rectus capitis posterior minor
Extends the head
61
O/I for deltoid
O: Lateral third of clavicle, acromion and spine of scapula I: Deltoid tuberosity of humerus
62
Action of deltoid
Abducts the arm, extend, flex, medially and laterally rotate the arm
63
Nerve of deltoid
Axillary nerve
64
Artery from the deltoid
Posterior circumflex humeral artery
65
O/I supraspinatous
O: Supraspinous fossa I: Greater tuberlce of the humerus
66
Action of supraspinatous
First 10-20 degrees of abduction of the arm
67
Nerve for supraspinatous
Suprascapular nerve
68
Artery for supraspinatous
Suprascapular artery
69
O/I for infraspinatous
O: Infraspinatous fossa I: Greater tubercle of humerus
70
Action of infraspinatous
Laterally rotates the arm
71
Nerve for infraspinatous
Suprascapular nerve
72
Artery for infraspinatous
suprascapular artery
73
Teres minor O/I
O: Upper lateral border of scapula I: Greater tubercle of the humerus
74
Action of teres minor
Laterally rotates the arm
75
Nerve for teres minor
Axillary nerve
76
Artery for teres minor
Circumflex scapular artery
77
Teres Major O/I
O: Dorsal surface of inferior angle of scapula I: Lesser tubercle of humerus
78
Action of teres major
Adducts the arm and medially rotates it
79
Nerve for teres major
Lower Subscap nerve
80
Artery for teres major
Circumflex scapular artery
81
Subscapularis O/I
O: Subscpular fossa of scapula I: Lesser tubercle of the humerus
82
Action of subscapularis
Medially rotates the arm
83
Nerve of subscapularis
Upper and lower Subscap nerve
84
Artery for subscapularis
Subscapular artery
85
Pec Major O/I
O: Medial half of clavicle, manubrium, body of sternum, ribs 2-6 I: Greater tubercle of humerus
86
Action of Pec major
Flexes and adducts the arm
87
Nerve for pec major
Medial and lateral pectoral nerves
88
Artery for pec major
Pectoral branch of the thoracoacromial trunk
89
Pec minor O/I
O: Ribs 3-5 I: Coracoid process of the scapula
90
Action of pec minor
Draws scapula forward, medial and down
91
Nerve for pec minor
Medial pectoral nerve
92
Artery for pec minor
Pectoral branch of the thoracoacromial trunk
93
Serratus anterior O/I
O: Ribs 1-8 I: Medial border of scapula
94
Serratus anterior action
Draws scapula forward and rotate scapula superiorly
95
Nerve for serratus anterior
Long Thoracic
96
Artery for serratus anterior
Lateral thoracic artery
97
Biceps brachii O/I
O: Short head on the coracoid process of the scapula, the long head on the supraglenoid tubercle of the scapula I: Radial tuberosity
98
Action of biceps brachii
Flexes the forearm and supinates the the arm. The long head also flexes the arm
99
Nerve for biceps brachii
Musculocutaneous
100
Artery for biceps brachii
Brachial artery
101
Brachialis O/I
O: Anterior surface of lower one half of the humerus I: Coranoid process of the ulna
102
Action of brachialis
Flexes forearm
103
Nerve of brachialis
Musculocutaneous nerve
104
Artery for brachialis
Brachial artery
105
Coracobrachialis O/I
O: Coracoid process of the scapula I: Medial middle of humerus
106
Action of coracobracialis
Flexion and adduction of the arm
107
Nerve for coracobrachialis
Musculocutaneous nerve
108
Artery for coracobrachialis
Brachial artery
109
Triceps O/I
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
Action of triceps
Extends the forearm. Thel ong head extends and adducts the arm
111
Nerve for triceps
Radial
112
Artery for triceps
Deep Brachial profundus artery
113
Brachioradialis O/I
O: Lateral supracondyle of humerus I: Styloid process of radius
114
Action of brachioradialis
Flexes elbow and assists in pronation/supination

MSK Week 2 (28 decks)

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