Intrinsic Muscles of the back Flashcards
(96 cards)
1
Q
Posterior serratus superior insertion
A
superior border of 2nd - 4th ribs
2
Q
Posterior serratus superior innervation
A
2nd - 5th intercostal nerves
3
Q
Posterior serratus superior action
A
elevates ribs
4
Q
posterior serratus inferior origin
A
T11-L2 (spinous process)
5
Q
posterior serratus inferior insertion
A
inferior border near angle 8th - 12th ribs
6
Q
posterior serratus inferior innervation
A
anterior rami of spinal nn T9-T12
7
Q
posterior serratus inferior action
A
depresses ribs
8
Q
Posterior serratus superior origin
A
ligamentum nuchae (nuchal ligament) C7-T3 spinous process
9
Q
iliocostalis cervicis origin
A
3rd - 7th ribs
10
Q
iliocostalis cervicis insertion
A
transverse processes of C4-C6
11
Q
iliocostalis cervicis innervation
A
spinal nerves C8-L1
posterior rami, lateral branches
12
Q
iliocostalis cervicis action
A
Bilaterally: extends spine
Unilaterally: bends spine laterally to the same side
13
Q
iliocostalis thoracis origin
A
7th - 12th ribs
14
Q
iliocostalis thoracis insertion
A
1st - 6th ribs
15
Q
iliocostalis thoraacis innervation
A
spinal nerves C8-L1
posterior rami, lateral branches
16
Q
iliocostalis lumborum action
A
Bilaterally: extends spine
Unilaterally: ends spine laterally to same side
17
Q
longissimus capitis origin
A
transverse processes and articular processes of C4-C7
transverse processes of T1-T3
18
Q
longissimus capitis insertion
A
mastoid process (temporal bone)
19
Q
longissimus capitis innervation
A
Spinal nerve C1-L5 (posterior rami, lateral branches)
20
Q
longissimus capitis action
A
Bilaterally: Extends head
Unilaterally: flex and extends head to same side
21
Q
Longissimus cervicis origin
A
Transverse processes of T1-T6
22
Q
longissimus cervicis insertation
A
transverse processes of C2-C5
23
Q
longissimus cervicis innervation
A
spinal nerves C1-L5 (posterior rami, lateral branches)
24
Q
longissimus thoracis origin
A
sacrum
iliac crest
lumbar vertebrae (spinous processes)
lower thoracic vertebrae (transverse processes
25
longissimus thoracis insertion
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2nd-12th ribs
lumbar vertebrae (costal facets)
thoracic vertebrae (transverse processes)
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26
longissimus thoracis innervation
Spinal nerves C1-L5 (posterior rami, lateral branches)
27
Longissimus thoracis action
bilateral: extends the spine
unilateral: bends spine to same side
28
longissimus cervicis action
bilateral: extends the spine
unilateral: bends spine to same side
29
spinalis cervicis origin
C5-T2 (spinous processes)
30
spinalis cervicis insertion
C2-C5 (spinous process)
31
spinalis cervicis innervation
spinal nerves (posterior rami)
32
spinalis cervicis action
bilaterally: extends cervical and thoracic spine
33
spinalis thoracis origin
T10-L3 (spinous process, lateral surface)
34
spinalis thoracis insertion
T2-T8 (spinous process, lateral surface)
35
spinalis thoracis innervation
spinal nerves (posterior rami)
36
spinalis thoracis action
bilateral: extend cervical and thoracic spine
unilateral: bend cervical and thoracic spine to same side
37
splenius capitis origin
nuchal ligament
| C3-C7 (spinous process)
38
splenius capitis insertion
Lateral superior nuchal line
mastoid process
(of occipital bone)
39
splenius capitis innervation
spinal nerve C1-C6 (posterior rami, lateral branches)
40
splenius capitis action
bilaterally: extends cervical spine and head
unilaterally: flex and rotate head to same side
41
splenius cervicis origin
T3-T6 (spinous process)
42
splenius cervicis insertion
C1-C2 (transverse processes)
43
splenius cervicis innervation
spinal nerve C1-C6 (posterior rami, lateral branches)
44
splenius cervicis action
bilaterally: extends cervical spine and head
unilaterally: flex and rotates the head to same side
45
semispinalis capitis origin
C4-T7 (transverse processes and articular processes)
46
semispinalis capitis insertion
between superior and inferior nuchal lines
47
semispinalis capitis innervation
spinal nerve (posterior rami)
48
semispinalis capitis action
Bilateral: extends thoracic and cervical spine and head
Unilateral: bends head, cervical, and thoracic spine to one side; rotates to opposite side
49
Semispinalis cervicis origin
T1-T6 (transverse processes)
50
Semispinalis cervicis insertion
C2-C5 (spinous process)
51
Semispinalis cervicis innervation
spinal nerve (posterior rami)
52
Semispinalis cervicis action
Bilateral: extension of thoracic and cervical spine and the head
Unilateral: bends head, cervical, and thoracic spine to same side; rotate to opposite side
53
Semispinalis thoracis origin
T6-T12 (spinous process)
54
Semispinalis thoracis insertion
C6-T4 (spinous process)
55
Semispinalis thoracis innervation
spinal nerve (posterior rami)
56
Semispinalis thoracis action
bilaterally: extension of cervical, thoracic spine and the head
unilaterally: bends head, cervical, thoracic spine to same side; rotates to opposite side
57
multifidus origin/insertion
C2 to sacrum
| between transverse processes and spinous processes skipping 2-4 vertebrae
58
multifidus innervation
spinal nerves (posterior rami)
59
multifidus action
Bilateral: Extends spine
Unilateral: Flexes spine to the same side
rotates to opposite sides
60
rotatores brevis origin/insertion
T1-T12 between transverse processes and spinous processes of every adjacent vertebrae
61
rotatores brevis innervation
spinal nerves (posterior rami)
62
rotatores brevis action
Bilateral: Extends thoracic spine
Unilateral: Rotates spine to opposite side
63
rotatores longi origin/insertion
T1-T12
| between transverse processes and spinous processes of every other vertebrae
64
rotatores longi innervation
spinal nerves (posterior rami)
65
rotatores longi action
Bilateral: Extends thoracic spine
Unilateral: Rotates spine to opposite side
66
obliquus capitis inferior origin
spinous process of C2
67
obliquus capitis inferior insertion
transverse process of C1
68
obliquus capitis inferior innervation
C1-suboccipital nerve
| posterior rami
69
obliquus capitis inferior action
Bilaterally: extends the head
Unilaterally: rotates the head ipsilaterally
70
obliquus capitis superior origin
C1 transverse process
71
obliquus capitis superior insertion
middle 1/3 of inferior nuchal line above rectus capitis posterior major
72
obliquus capitis superior innervation
C1-suboccipital nerve
| posterior rami
73
obliquus capitis superior action
Bilaterally: extends the head
Unilaterally: ipsilaterally flexes the head
contralaterally rotates the head
74
rectus capitis posterior major origin
C2 spinous processes
75
rectus capitis posterior major insertion
middle 1/3 of inferior nuchal line
76
rectus capitis posterior major innervation
C1-suboccipital nerve
| posterior rami
77
rectus capitis posterior major action
Bilaterally: extends the head
Unilaterally: rotates head ipsilaterally
78
rectus capitis posterior minor origin
C1 posterior tubercle
79
rectus capitis posterior minor insertion
medial 1/3 of inferior nuchal line
80
rectus capitis posterior innervation
C1-posterior rami
| suboccipital nerve
81
rectus capitis posterior minor action
bilaterally: extends head
unilaterally: rotate head ipsilaterally
82
sternocleidomastoid origin
sternal head: sternum
| clavicular head: clavicle
83
sternocleidomastoid insertion
mastoid process of temporal bone
| superior nuchal line
84
sternocleidomastoid innervation
motor accessory nerve CN XI
| pain and proprioception C2-C3
85
sternocleidomastoid action
Bilaterally: extends head
aids in respiration when head is fixed
Unilaterally: ispilaterally laterally flexes head
contralaterally rotates head
86
scalene anterior origin
anterior tubercle of transverse processes of C3-C6
87
scalene anterior insertion
1st rib scalene tubercle
88
scalene anterior innervation
direct branches from cervical and brachial plexus C3-C8
89
scalene anterior action
Mobile ribs: elevates upper ribs during forced inspiration
Fixed ribs: bilaterally: flexes neck
unilaterally: bends cervical spine to same side
90
middle scalene origin
C1-C2 transverse processes
| C3 to C7 posterior tubercles of transverse processes
91
middle scalene insertion
first rib, posterior to the groove for subclavian artery
92
middle scalene innervation
direct branches from cervical and brachial plexus C3-C8
93
middle scalene action
Mobile ribs: elevates upper ribs (forced inspiration)
Fixed ribs:
bilaterally: flex neck
unilaterally: flex cervical spine to ipsilateraly side
94
posterior scalene origin
posterior tubercle of transverse processes of C5-C7
95
posterior scalene insertion
2nd rib (outer surface)
96
posterior scalene action
Mobile ribs: elevates upper ribs (forced inspiration)
Fixed ribs:
Bilaterally: flex neck
Unilaterally: laterally flexes cervical spine ipsilaterally
