Erector Spinae (Sacrospinalis) Flashcards

1
Q

Which muscles represent the fourth layer of the true back?

A

Erector spinae or sacrospinalis muscles

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2
Q

Which muscles are identified as erector spine or sacrospinalis muscles?
(3)

A

Iliocostalis
Longissimus
Spinalis

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3
Q

What muscles are classically identified as iliocostalis muscles?
(3)

A

Iliocostalis lumborum
Iliocostalis Thoracis
Iliocostalis Cervicis

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4
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis lumborum?
(4)

A

Spinous processes of T11-T12, L1-L5
Median sacral crest
Lateral sacral crest

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5
Q

Contraction of iliocostalis lumborum will result in what movements?

A

Extension, lateral flexion and rotation of lumbar spine

Lateral pelvic movement

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6
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis thoracis?

A

NONE

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7
Q

What is the insertion for the iliocostalis thoraces?

2

A

Costal angles of the upper 6-7 ribs

Transverse process of C7

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8
Q

What osseous parts of the vertebral column serve as an origin to the iliocostalis cervicis?

A

NONE

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9
Q

What osseous parts of the vertebral column serve as an origin to the longissimus thoracis?
(3)

A

Accessory process and transverse processes of L1-L5
Spinous processes of L3-L5
Median sacral crest S1-S3

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10
Q

Which erector spinae muscles attach to cervical articular processes?
(2)

A

Longissimus Cervicis

Longissimus Capitis

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