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Axial Anatomy > Lumbar Spine > Flashcards

Lumbar Spine Flashcards

1
Q

Origin of External Oblique

A

-Outer surfaces 5-12 ribs + costal cartilages

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2
Q

Insertion of External Oblique

A
  • Linea Alba via Rectus Sheath
  • Pubic tubercle to ASIS (Ing Lig)
  • Ant 2/3 Iliac Crest
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3
Q

Action of External Oblique

A
  • Trunk flexion
  • Posterior pelvic tilt
  • Lat flexion
  • Contralateral rotation of the trunk on pelvis
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4
Q

Insertion of Internal Oblique

A
  • Lower borders of 10-12 ribs
  • Linea Alba via rectus sheath
  • Pectin Pubis via conjoint tendon
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5
Q

Origin of Internal Oblique

A
  • 2/3 Ing lig
  • 2/3 ant iliac crest
  • Thoracolumbar fascia
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6
Q

Action of Internal Oblique

A

Posterior pelvic tilt
Flexion
Ipsilateral rotation - trunk on pelvis
Lat flexion of trunk

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7
Q

Origin of Transverse Abdominus

A

Internal Surfaces of 7-12 costal cartilages
Thoracolumbar fascia
iliac crest
lat1/3 ing lig

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8
Q

Insertion of Transverse Abdominus

A

Linea Alba via rectus sheath

Pectin pubis via conjoint tendon

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9
Q

Action of Transverse Abdominus

A

Raises intra-abdominal pressure

Stabilising muscle of lumbar spine

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10
Q

Insertion

of Quadratus Lumborum

A

Med 1/2 lower 12th rib + Transverse processes of lumbar vertebrae

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11
Q

Origin

of Quadratus Lumborum

A

Illiolumbar Ligament and Iliac crest

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12
Q

Action of Quadratus Lumborum

A

Muscle of Inspiration
Ipsilateral side flexion
Lumbar extension

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13
Q

Origin of Erector Spinae

- Illiocostalis , Longissimus, Spinalis

A

Lower six ribs and rib angles

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14
Q

Insertion of Erector Spinae

A
  • T11-L5 spinous processes
  • Supraspinous and Sacroiliac ligs
  • Sacral crests
  • Posterior part of iliac crest
  • Iliac Tuberosity
  • Inner lip of Iliac crest
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15
Q

Action of Erector Spinae

A

Bilateral - Extension and control of flexion
Maintenance of lumbar lordosis
Unilateral- Ipsilateral lateral flexion/rotation

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16
Q

Action of Rotatories

A

Bilateral contraction: Extension of thoracic spine

Unilateral contraction: Rotation of thoracic spine - Ipsilateral

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17
Q

Action of Multifidus

A

Bilateral contraction: Extension of spine
Unilateral contraction: Lateral flexion of spine (ipsilateral), rotation of spine (contralateral)
Stabilisation of lumbar Spine

18
Q

Action of Interspinales

A

Extension of cervical and lumbar spine

19
Q

Action of Intertransversarii

A

Assists lateral flexion of the spine; Stabilizes spine

20
Q

How much flexion occurs in the Lumbar Spine

A
  • 50-60 degrees , with greatest movement occurRing at L4/5 , L5/S1
21
Q

How much extension occurs in the Lumbar Spine

A

-Approx 30 degrees

22
Q

How much side flexion occurs in the Lumbar Spine

A
  • 25 degrees

- Coupled with rotation

23
Q

How much rotation occurs in the Lumbar Spine

A

1 degree at each segmental level with less at L5/S1 , giving a mean rotation of 8-12 in each direction , limited by orientation of facet joints.

24
Q

Give the Location of the Posterior layer of the Thoracolumbar Fascia

A
  • Superficial to erector Spinae and attached to spinous processes
25
Q

Give the location of the Middle layer of the Thoracolumbar Fascia

A

-Between erector spinae and Quadratus Lumborum , attached to the transverse tips

26
Q

Give the location of the Anterior layer of the Thoracolumbar fascia.

A
  • Deep to quadratus lumborum, attached to anterior of transverse process.
27
Q

Draw and label the Thoracolumbar Fascia

A
  • Draw and Label
28
Q

Give the main functions of the Abdominals

A
  • Trunk movement
  • Protection
  • Spinal stabilisation
  • Abdominal pressure for - Forced expiration , Micturition, Deification , Parturition and Vomiting
29
Q

What does the Anterior layer of the Rectus sheath comprise of ?

A
  • External and Internal oblique
30
Q

What does the Posterior layer of the Rectus sheath comprise of?

A
  • Internal oblique and Transverse Abdominus
31
Q

Where do the layers of the Rectus Sheath interlace?

A
  • Linea Alba
32
Q

What is Rectus Diastasis?

A
  • Torn rectus sheath down Linea Alba

- Pregnancy

33
Q

What is the curvature of the Lumbar spine?

A

Lordosis

34
Q

What plane does the lumbar spine lie?

A

Vertical

35
Q

What plane does the Thoracic spine lie?

A

Vertical

36
Q

What plane does the Cervical Spine lie?

A

Horizontal

37
Q

Label a Lumbar Vertebrae

A
  • Pedicle
  • Body
  • Lamina
  • TP
  • SP
38
Q

What Accessory Movements would you carry out in your OSCE?

A

PA of SP and TP

39
Q

What happens to the muscles in Anterior Pelvic Tilt?

A
  • Hip Flexors Shorten
40
Q

What happens to the muscles in Posterior Pelvic Tilt

A
  • Hip Extensors Shorten

Axial Anatomy (3 decks)

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