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Gross Anatomy OINAs > Deep Back POINA's > Flashcards

Deep Back POINA's Flashcards

1
Q

What muscles are found in the superficial layer of the deep back?

A

splenius capitis & splenius cervicis

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2
Q

Splenius Capitis - Proximal Attachment

A

spinous processes of C7-T6
ligamentum nuchae

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3
Q

Splenius Capitis - Distal Attachment

A

mastoid process
superior nuchal line
(fibers run superolaterally)

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4
Q

Splenius Capitis - Nerve Innervation

A

posterior (or dorsal) rami of spinal nerves

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5
Q

Splenius Capitis - Muscle Action

A

Bilaterally:
head & neck extension

Unilaterally:
neck lateral flexion
head ipsilateral rotation

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6
Q

Splenius Capitis - Purposeful Activity

A

social interaction
driving

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7
Q

Splenius Cervicis - Proximal Attachment

A

spinous processes of C7-T6
ligamentum nuchae

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8
Q

Splenius Cervicis - Distal Attachment

A

transverse processes of C1-C4

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9
Q

Splenius Cervicis - Nerve Innervation

A

posterior (or dorsal) rami of spinal nerves

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10
Q

Splenius Cervicis - Muscle Action

A

Bilaterally:
head & neck extension

Unilaterally:
neck lateral flexion
head ispilateral rotation

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11
Q

Splenius Cervicis - Purposeful Activity

A

social interaction
driving

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12
Q

What muscle group is found in the intermediate layer of the deep back?

A

Erector Spinae

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13
Q

Name the muscles of the erector spinae group.

A

Iliocostalis
Longissimus
Spinalis

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14
Q

Erector Spinae - Proximal Attachment

A

common tendon (thoracolumbar fascia) that attaches to the…

posterior surface of the sacrum
iliac crest
spinous processes of T11-L5

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15
Q

Iliocostalis - Distal Attachment

A

lower rib angles
cervical transverse processes

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16
Q

Longissimus - Distal Attachment

A

between rib tubercles & angles to the thoracic transverse processes

mastoid process?

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17
Q

Spinalis - Distal Attachment

A

upper thoracic spinous processes
cranium

18
Q

Erector Spinae - Nerve Innervation

A

posterior (or dorsal) rami of spinal nerves

19
Q

Erector Spinae - Muscle Action

A

Bilaterally:
vertebral column extension

Unilaterally:
vertebral column ipsilateral flexion

20
Q

Erector Spinae - Purposeful Activity

A

maintaining an upright posture for ADL (activities of daily living)

21
Q

What muscle group is found in the deep layer of the deep back?

A

Transversospinalis

22
Q

What muscles make up the Transversospinalis group?

A

Rotatores
Multifidis
Semispinalis Capitis

23
Q

What are the 2 types of Rotatores muscles?

A

brevis & longus

24
Q

Rotatores - Inferior Attachment

A

transverse process of vertebrae

25
Q

Where is the Rotatores best developed?

A

thoracic region

26
Q

Rotatores - Superior Attachment

A

spinous process of lumbar vertebrae through C2

spans 1-2 segments above origin
brevis: 1
longus: 2

27
Q

Rotatores - Nerve Innervation

A

posterior (or dorsal) rami of spinal nerves

28
Q

Rotatores - Muscle Action

A

Bilaterally:
vertebral column local extension
proprioception (sometimes?)

Unilaterally:
vertebral column contralateral rotation

29
Q

Rotatores - Purposeful Activity

A

tai chi or yoga
(deep postural stability)

30
Q

Multifidus - Inferior Attachment

A

arises from…
posterior sacrum
posterior superior iliac spine
aponeurosis of erector spinae
sacroiliac ligaments
mamillary processes of lumbar vertebrae
transverse processes of T1-T3
articular processes of C4-C7

31
Q

Multifidis - Superior Attachment

A

entire length of spinous processes

spans 2-4 segments
fibers pass obliquely superomedially

32
Q

Where is the Multifidus it’s thickest?

A

lumbar region

33
Q

Multifidus - Nerve Innervation

A

posterior (or dorsal) rami of spinal nerves

34
Q

Multifidus - Muscle Action

A

Bilaterally:
vertebral column local extension

Unilaterally:
vertebral column contralateral rotation

also stabilizes vertebrae during local movements of the vertebral column

35
Q

Multifidus - Purposeful Activity

A

tai chi or yoga
(deep postural stability)

36
Q

What are the other 2 segments of the Semispinalis Capitis?

A

cervicis & thoracis

37
Q

Semispinalis Capitis - Inferior Attachment

A

transverse processes of C4-T12

38
Q

Semispinalis Capitis - Superior Attachment

A

occipital bone
spinous processes in thoracic & cervical regions

spans 4-6 segments
fibers run superomedially

39
Q

Semispinalis Capitis - Nerve Innervation

A

cervical posterior rami of spinal cervical nerves

40
Q

Semispinalis Capitis - Muscle Action

A

Bilaterally:
head, neck, & thoracic spine extension

Unilaterally:
head, neck, & thoracic spine contralateral rotation

41
Q

Semispinalis Capitis - Purposeful Activity

A

using a computer workstation
looking overhead

Gross Anatomy OINAs (6 decks)

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