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Muscles w/ OIAIB > Muscles Moving the T-Spine > Flashcards

Muscles Moving the T-Spine Flashcards

1
Q

Iliocostalis (origin) (most lateral, ILS)

A

broad common tendon at posterior iiiac crest, sacrum

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2
Q

Iliocostalis (insertion)

A

angles of lower ribs

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3
Q

Iliocostalis (action)

A

extends the trunk and laterally bends the vertebral column in isolation

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4
Q

Iliocostalis (innervation)

A

dorsal rami

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5
Q

Iliocostalis (blood supply)

A

dorsal branches of lumbar arteries

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6
Q

Longissimus (origin) (middle, ILS)

A

broad common tendon

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7
Q

Longissimus (insertion)

A

between tubercles and angles of ribs, transverse processes of thoracic vertebrae

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8
Q

Longissimus (action)

A

extends and laterally bends the vertebral column

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9
Q

Longissimus (innervation)

A

dorsal rami

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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) (most medial, ILS)

A

broad 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 the vertebral column

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14
Q

Spinalis (innervation)

A

dorsal rami

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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 2-4 segments (longest)

18
Q

Multifidi (action)

A

stabilization and rotation of vertebral column (stability is primary, rotation is assist)

19
Q

Multifidi (innervation)

A

dorsal rami

20
Q

Multifidi (blood supply)

A

dorsal branches of lateral sacral arteries

21
Q

Rotatores (origin)

A

transverse processes of lumbar region

22
Q

Rotatores (insertion)

A

lamina and transverse processes of the spine above, spanning 1-2 segments (shortest)

23
Q

Rotatores (action)

A

stabilizes, extends, and rotates the spine (stability is primary, others are assist)

24
Q

Rotatores (innervation)

A

dorsal rami

25
Q

Rotatores (blood supply)

A

dorsal branches of segmental arteries

Muscles w/ OIAIB (25 decks)

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