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Gross Anatomy Of The Back And Thorax > Intrinsic Muscles (Middle: Illiocostalis) > Flashcards

Intrinsic Muscles (Middle: Illiocostalis) Flashcards

1
Q

Posterior intercostal arteries supply which erector spinea muscles?

A

Spinalis thoracis
longissimus cervicis
longissimus thoracis
Iliocostalis cervicis
iliocostalis thoracis
iliocostalis lumborum

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2
Q

What is the blood supply of longissimus capitis?

A

Occipital artery
Deep cervical artery

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3
Q

What is the origin of iliocostalis lumborum?

A

Iliac crest
Thoracolumbar fascia

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4
Q

What is the insertion of iliocostalis lumborum?

A

Lower 9 ribs lateral to angles

Ribs 3/4 - 12

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5
Q

What is the action of illiocostalis luborum ?

A

Extension and lateral flexion of the vertebral column.

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6
Q

What is the innervation of illiocostalis lumborum?

A

Dorsal rami of lumbar nerves

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7
Q

What is the blood supply of illiocostalis lumborum?

A

Posterior intercostal arteries
Lumbar arteries
(Superior portion covers ribs)

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8
Q

What is the origin of iliocostalis thoracis?

A

The lower six ribs
medial to illiocostalis lumborum

(Remember: Thora-6! Attaches on upper and lower six ribs)

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9
Q

What is the insertion of iliocostalis thoracis?

A

Upper six ribs and TPS of C7

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10
Q

What is the action of illiocostalis thoracis?

A

Extension of the vertebral column

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11
Q

What is the innervation of iliocostalis thoracis?

A

Dorsal rami of thoracic spinal nerves

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12
Q

What is the blood supply of iliocostalis thoracis

A

Posterior intercostal arteries

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13
Q

What is illiocostalis cervicis deep to?

A

Deep to splenius cervicis and capitis

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14
Q

What is the origin of illiocostalis services?

A

Upper three ribs at angles
Ribs 1,2,3

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15
Q

What is the insertion of iliocostalis cervicis?

A

TPS of C4- C6

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16
Q

What is the innervation of illiocostalis cervicis?

A

Dorsal Rami C4 - C6

17
Q

What is the blood supply for illiocostalis cervicis?

A

Posterior intercostal arteries

18
Q

Illiocostales is what part of what muscle group?

A

Erector spinae

19
Q

What is the order of erector spinae from lateral to medial?

A

Illiocostalis
Longissimus
Spinalis

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Gross Anatomy Of The Back And Thorax (6 decks)

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