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Anatomy Lab > Lumbar Spine Muscles > Flashcards

Lumbar Spine Muscles Flashcards

1
Q

Iliocostalis origin

A

Broad common tendon (post iliac crest, post sacrum, SI ligaments, sacral and lower lumbar SPs)

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2
Q

Iliocostalis insertion

A

Angles of lower ribs (more posterior) 6-12

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3
Q

Iliocostalis action

A

Extends and laterally bends vertebral column

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4
Q

Iliocostalis innervation

A

Dorsal rami of each region

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5
Q

Iliocostalis blood supply

A

Dorsal branches of lumbar arteries

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6
Q

Longissimus origin

A

Upper intermediate part of common tendon

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7
Q

Longissimus insertion

A

Between tubercles and angles of ribs, transverse processes of thoracic

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8
Q

Longissimus action

A

Extends and laterally bends vertebral column

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9
Q

Longissimus innervation

A

Dorsal rami of each region

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10
Q

Longissimus blood supply

A

Dorsal branches of posterior intercostal & subcostal arteries

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11
Q

Spinalis origin

A

Upper intermediate part of the common tendon

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12
Q

Spinalis insertion

A

Spinous processes of upper thoracic vertebrae

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13
Q

Spinalis action

A

Extends and laterally bends vertebral column

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14
Q

Spinalis innervation

A

Dorsal rami of each region

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15
Q

Spinalis blood supply

A

Dorsal branches of posterior intercostal & subcostal arteries

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16
Q

Multifidi origin

A

Sacrum, ilium

17
Q

Multifidi insertion

A

Spinous processes of vertebrae above, spanning two to four segments

18
Q

Multifidi action

A

Spinal stabilizer, assists with rotation and extension

19
Q

Multifidi innervation

A

Dorsal rami of lumbar region

20
Q

Multifidi blood supply

A

Dorsal branches of lateral sacral arteries

21
Q

Rotatores origin

A

Transverse processes

22
Q

Rotatores insertion

A

Lamina and spinous process of spine above, spanning one or two segments

23
Q

Rotatores action

A

Stabilizes, extends, and rotates spine

24
Q

Rotatores innervation

A

Dorsal rami of spinal nerves

25
Q

Rotatores blood supply

A

Dorsal branches of segmental arteries

26
Q

Iliocostalis lumborum origin

A

Iliac crest, sacrum

27
Q

Iliocostalis lumborum insertion

A

Angles of lower ribs

28
Q

Iliocostalis lumborum action

A

Extends and laterally bends vertebral column

29
Q

Iliocostalis lumborum innervation

A

Dorsal rami of each region

30
Q

Iliocostalis lumborum blood supply

A

Dorsal branches of lumbar arteries

Anatomy Lab (13 decks)

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