Erector Spinae (Sacrospinalis) Flashcards

1
Q

Which muscles are identified as erector spinae or sacrospinalis muscles?

A

iliocostalis, longissimus, spinalis

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2
Q

What is the innervation of the iliocostalis lumborum?

A

`dorsal rami of lower thoracic and all lumbar spinal nerves

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3
Q

What is the insertion for the iliocostalis thoracis?

A

costal angles of the upper 6-7 ribs, transverse process of C7

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4
Q

Which subdivision of the iliocostalis primarily originates and inserts on ribs?

A

iliocostalis thoracis

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5
Q

What is the innervation of the iliocostalis thoracis?

A

dorsal rami of upper 6 thoracic spinal nerves (T1-T6 cord levels)

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6
Q

What is the origin for the iliocostalis cervicis?

A

costal angles of the upper 3-6 ribs (ribs 1-3 or ribs 1-6)

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7
Q

What is the insertion for the iliocostalis cervicis?

A

posterior tubercle of transverse process of C(3) C4-C6

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8
Q

What is the innervation of the iliocostalis cervicis?

A

dorsal rami T1, T2 spinal nerves, sometimes C8 spinal nerver (C8, T1, T2 cord levels)

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9
Q

What osseus parts of the vertebral column serve as an origin to the longissimus thoracis?

A

accessory process and transverse processes of L1-L5, spinous processes of L3-L5 and median sacral crest S1-S3

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10
Q

What is the innervation of the longissimus thoracis?

A

dorsal rami of all thoracic and lumbar spinal nerves (cord levels T1-T12, L1-L5)

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11
Q

What osseus parts of the vertebral column serve as an insertion for the longissimus cervicis?

A

posterior tubercle of transvere processes from C2-C6 or C7, articular processes from C2-C6 or C7

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12
Q

What is the innervation of the longissimus cervicis?

A

dorsal rami of C4-C8 and T1-T2 spinal nerves (C4-C8 and T1-T2 cord levels)

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13
Q

What is the innervation of the longissimus capitis?

A

dorsal rami of C1-C3 or C4 spinal nerves (C1-C3 or C4 cord levels)

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14
Q

Which erector spinae muscles attach to cervical articular processes?

A

longissimus cervicis and longissimus capitis

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15
Q

What is the innervation of the spinalis thoracis?

A

dorsal rami of all thoracic and upper lumbar spinal nerves

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16
Q

What is the innervation of the spinalis cervicis?

A

dorsal rami of all cervical spinal nerves (C1-C8 cord levels)