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GROSS > Deep Back Layers > Flashcards

Deep Back Layers Flashcards

1
Q

Deep back Superficial Layer muscles

A

Splenius Capitis & Splenius Cervicis

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2
Q

Splenius Capitis & Splenius Cervicis (Purposeful Activity)

A

-Social Interactivity
-Driving

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3
Q

Splenius Capitis & Splenius Cervicis (Proximal Attachment)

A

-Nuchal ligament
-SP C7-T6

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4
Q

Splenius Capitis & Splenius Cervicis (Distal Attachments)

A

-Splenius capitis: Fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone.

-Splenius cervicis: TP of C1–C4 vertebrae

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5
Q

Splenius Capitis & Splenius Cervicis (Nerve Innervations)

A

Dorsal rami of spinal nerves

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6
Q

Splenius Capitis & Splenius Cervicis (Action)

A

-Acting unilaterally: laterally flexes the neck and rotates the
head to side of active muscles (ipsilateral)

-Acting bilaterally: extend the head and neck

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7
Q

Deep Back Intermediate group (Group name & Muscles involved) list Medial to Lateral

A

Erector Spinae Group
-Spinalis
-Longissimus
-Iliocostalis

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8
Q

Erector Spinae Group (Purposeful Activity)

A

Maintaining an upright posture for ADLs/IADLs

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9
Q

Erector Spinae Group (Proximal Attachment)

A
  • Common tendon (thoracolumbar fascia) that attaches to the posterior surface of the sacrum
  • iliac crest
  • spinous processes of the lumbar
  • last two thoracic vertebrae
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10
Q

Erector Spinae Group (Nerve Innervation)

A

Dorsal rami of Spinal Nerves

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11
Q

Erector Spinae Group (Action)

A

Unilaterally:
Laterally flex the vertebral column to ipsilateral the side

Bilaterally:
Extend the vertebral column

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12
Q

Iliocostalis (Distal Attachment)

A

lower rib angles and cervical TP

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13
Q

Longissimus (Distal Attachment)

A

between rib tubercles and angles to thoracic TP

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14
Q

Spinalis (Distal Attachment)

A

upper thoracic SP and to cranium

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15
Q

Major deep back (Group Name and Muscles involved) list deep to superficial

A

Transversospinalis Group
-Rotatores (brevis and longus)
-Multifidus
-Semispinalis (thoracis, cervicis, and capitis)

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16
Q

Rotatores (Purposeful Activity)

A

Tai chi or yoga (deep postural stability)

17
Q

Rotatores (Inferior Attachment)

A

TP of vertebrae (thoracic the best)

18
Q

Rotatores (Superior Attachment)

A

SP of lumbar vertebrae through second cervical vertebrae
(rotatores span 1-2 vertebrae)
1= brevis
2= longus

19
Q

Rotatores (Nerve Innervation)

A

Dorsal rami of Spinal Nerves

20
Q

Rotatores (Action)

A

-Unilaterally:
Rotate the vertebral column to the opposite side (contralateral)

-Bilaterally:
Extend the vertebral column locally
May function as organs of proprioception

21
Q

Multifidi (Purposeful Activity)

A

Tai chi or yoga (deep postural stability)

22
Q

Multifidi (Action)

A

-Unilaterally:
Rotate the vertebral column to the opposite side (contralateral)

-Bilaterally:
Extend the vertebral column

-Stabilizes vertebrae during local movements of vertebral column

23
Q

Multifidi (Inferior Attachment)

A
  • Arises from posterior sacrum, PSIS
  • Aponeurosis of erector spinae
  • SI ligaments
  • Mammillary processes of lumbar vertebrae
  • TP of T1–T3, articular processes of C4–C7
24
Q

Multifidi (Superior Attachment)

A
  • Thickest in lumbar region
  • Fibers pass obliquely superomedially to
    entire length of SP
  • Located 2–4 segments superior to proximal attachment
25
Q

Multifidi (Nerve Innervation)

A

Dorsal rami of Spinal Nerves

26
Q

Semispinalis (Purposeful Activity)

A

Using a computer workstation, looking overhead

27
Q

Semispinalis (Action)

A
  • Extends the head, neck, and thoracic spine
  • Rotates them contralaterally
28
Q

Semispinalis (Inferior Attachment)

A

TP of C4 to T12

29
Q

Semispinalis (Superior Attachment)

A
  • Fibers run superomedially to occipital bone and SP in thoracic and cervical regions
  • Spanning 4–6 segments.
30
Q

Semispinalis (Nerve Innervations)

A

Cervical dorsal rami of Spinal Cervical Nerves

GROSS (2 decks)

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