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Anatomy > Intrinsic Back Muscles - Exam 1 > Flashcards

Intrinsic Back Muscles - Exam 1 Flashcards

(65 cards)

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1
Q

intrinsic back muscles function

A

aid in posture, acts on vertebral column

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2
Q

superficial intrinsic back muscles

A

splenius capitis, splenius cervicis

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3
Q

splenius capitis origin

A

nuchal ligament

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4
Q

splenius capitis insertion

A

superior nuchal line and mastoid process

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5
Q

splenius capitis innervation

A

dorsal primary rami

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6
Q

splenius capitis actions

A

bilat - extends head and neck
unilat - ipsilateral flexion and rotation

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7
Q

splenius cervicis origin

A

SP of T3-T6

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8
Q

splenius cervicis insertion

A

TP of C1-C3

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9
Q

splenius cervicis innervation

A

dorsal primary rami

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10
Q

splenius cervicis actions

A

bilat - extends head and neck
unilat - ipsilateral flexion of spine

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11
Q

intermediate intrinsic muscles

A

iliocostalis
longissimus
spinalis

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12
Q

iliocostalis origin

A

iliac crest and sacrum

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13
Q

iliocostalis insertion

A

TP of C4-C6
**intermediate attachments along rib cage

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14
Q

iliocostalis innervation

A

dorsal primary rami

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15
Q

iliocostalis actions

A

bilateral - extension of spine
unilat - ipsilateral flexion of spine

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16
Q

longissimus origin

A

iliac crest and SP of lumbar vertebrae

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17
Q

longissimus insertion

A

mastoid process of temporal bone
**intermediate attachments of TPs of thoracic and cervical vertebrae

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18
Q

longissimus innervation

A

dorsal primary rami

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19
Q

longissimus actions

A

bilateral - extension of spine and head
unilateral - ipsilateral flexion of spine and head

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20
Q

spinalis origin

A

SP of T11-L2

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21
Q

spinalis insertion

A

occipital bone
**intermediate attachments on SPs of thoracic and cervical vertebrae and nuchal ligament

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22
Q

spinalis innervation

A

dorsal primary rami

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23
Q

spinalis actions

A

bilateral - extension of spine and head
unilateral - ipsilateral flexion of spine and head

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24
Q

deep intrinsic muscles

A

semispinalis capitis
semispinalis cervicis
semispinalis thoracis
multifidus
rotatores

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25
semispinalis capitis origin
articular processes of cervical vertebrae
26
semispinalis capitis insertion
occipital bone
27
semispinalis capitis innervation
dorsal primary rami
28
semispinalis capitis actions
bilateral - extends head/cervical/thoracic spine unilateral - ipsilateral flexion of head and contralateral rotation of head/cervical/thoracic spine
29
semispinalis cervicis origin
TP of T1-T6
30
semispinalis cervicis insertion
SP of cervical vertebrae
31
semispinalis cervicis innervation
dorsal primary rami
32
semispinalis cervicis actions
bilateral - extends cervical/thoracic spine unilateral - ipsilateral flexion and contralateral rotation of cervical/thoracic spine
33
semispinalis thoracis origin
TP of T6-T10
34
semispinalis thoracis insertion
SP of C6-T4
35
semispinalis thoracis innervation
dorsal primary rami
36
semispinalis thoracis actions
bilateral - extends thoracic spine unilateral - ipsilateral flexion of spine and contralateral rotation of thoracic spine
37
multifidus origin
sacrum and maxillary bodies of lumbar vertebrae
38
multifidus insertion
SP of atlas **intermediate attachments on SP of vertebrae 2-3 above origin
39
multifidus innervation
dorsal primary rami
40
multifidus actions
bilateral - stabilization of vertebral column, extension of spine unilateral - ipsilateral flexion and contralateral rotation
41
rotatores origin
TP of thoracic vertebrae
42
rotatores insertion
SP of thoracic vertebrae 1-2 levels up
43
rotatores innervation
dorsal primary rami
44
rotatores actions
proprioception, stabilization of spine, local extension/rotation (contralateral) of vertebrae
45
suboccipital triangle
rectus capitis posterior major/minor obliques capitis superior/inferior
46
rectus capitis posterior major origin
SP of C2
47
rectus capitis posterior major insertion
inferior nuchal line of occipital bone
48
rectus capitis posterior major blood supply
vertebral artery and occipital artery
49
rectus capitis posterior major innervation
suboccipital nerve
50
rectus capitis posterior major actions
extend head at atlantooccipital joint ipsilateral flexion and rotation
51
rectus capitis posterior minor origin
posterior tubercle of C1
52
rectus capitis posterior minor insertion
inferior nuchal line of occipital bone
53
rectus capitis posterior minor blood supply
vertebral artery and occipital artery
54
rectus capitis posterior minor innervation
suboccipital nerve
55
rectus capitis posterior minor actions
extends head at atlantooccipital joint, ipsilateral flexion and rotation
56
obliquus capitis superior origin
TP of C1
57
obliquus capitis superior insertion
inferior nuchal line of occipital bone
58
obliquus capitis superior blood supply
vertebral artery and occipital artery
59
obliquus capitis superior innervation
suboccipital nerve
60
obliquus capitis superior actions
extend head at atlantooccipital joint ipsilateral flexion and rotation
61
obliquus capitis inferior origin
SP of C2
62
obliquus capitis inferior insertion
transverse process C1
63
obliquus capitis inferior blood supply
vertebral artery and occipital artery
64
obliquus capitis inferior innervation
suboccipital nerve
65
obliquus capitis inferior actions
ipsilateral rotation

Anatomy (46 decks)

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