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Anatomy > Deep Muscles (Back) - GREYS ANATOMY > Flashcards

Deep Muscles (Back) - GREYS ANATOMY Flashcards

1
Q

What are deep muscles of the back innervated by?

A

Segmental branches of the posterior (dorsal) rami of spinal nerves

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2
Q

Where to deep muscles of the back extend to/from?

A

Extend from the pelvis to the skull

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3
Q

Name the extensors and rotators of the head and neck

A

Splenius capitis and crevicis

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4
Q

Name the extensors of the vertebral column

A

Erector spinae

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5
Q

Name the short segmental muscles muscles

A

Interspinales and intertransversarii

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6
Q

What does the thoracolumar fascia cover?

A

Deep muscles of back and trunk

  • overall organisation of the region
  • overall integrity of the region
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7
Q

Describe the thoracolumbar fascia superiorly

A
  • Passes anterior serratus posterior superior

- continuous with cervical fascia of neck

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8
Q

Describe the thoracolumbar fascia in the thoracic region

A
  • covers deep muscles

- separates deep from intermediate/superficial

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9
Q

Describe the thoracolumbar fascia medially / laterally

A

Attaches to :
- spinous processes of thoracic vertebrae (medially)

Attaches to :
- angles of ribs (laterally)

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10
Q

Which muscles’ medial attachments blend into the thoracolumbar fascia?

A

Latissimus dorsi & serratus posterior inferior

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11
Q

What are the layers of the thoracolumbar fascia in the lumbar region?

A

Posterior, middle, anterior

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12
Q

Describe the posterior layer of the thoracolumbar fascia in the lumbar region

A
  • thick
  • attaches to lumbar/sacral spinous processes & supraspinous ligament
  • covers erector spinae (laterally)
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13
Q

Describe the middle layer of the thoracolumbar fascia in the lumbar region

A
  • attaches to lumbar transverse process & intertransverse ligament
  • iliac crest (inf.)
  • rib 12 (sup.)
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14
Q

Describe the anterior layer of the thoracolumbar fascia in the lumbar region

A
  • covers anterior surface of quadratus lumborum (muscle of post. abdominal wall)
  • lumbar transverse process
  • iliac crest (inf.)
  • diaphragm, via lateral arcuate ligament (sup.)
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15
Q

Where do spinotransverse muscles run from?

A

From the spinous processes and ligamentum nuchae, upward and laterally

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16
Q

Origin of splenius capitis

A
  • Lower 1/2 of ligamentum nuchae, C7-T4 spinous processes
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17
Q

Origin of splenius cervicis

A
  • T3-T6 spinous process
18
Q

What are the 3 major groups of erector spinae muscles?

A
  1. Iliocostalis
  2. Longissimus
  3. Spinalis
19
Q

Name the 3 iliocostalis muscles

A

Iliocostalis: lumborum, thoracis, cervicis

20
Q

Name the 3 longissimus muscles

A

Longissimus: thoracis, cervicis, capitis

21
Q

Name the 3 spinalis muscles

A

Spinalis: thoracis, cervicis, capitis

22
Q

Insertion of splenius cervicis

A
  • C1-C3 transverse process
23
Q

Insertion of splenius capitis

A
  • Mastoid process
24
Q

Origin of illiocostalis cervicis

A
  • angles of ribs 3-6
25
Q

Insertion of illiocostalis cervicis

A
  • transverse process of C4-C6
26
Q

Origin of illiocostalis thoracis

A
  • Angles of lower 6 ribs
27
Q

Insertion of illiocostalis thoracis

A
  • angles of upper 6 ribs

- C7 transverse process

28
Q

Origin of illiocostalis lumborum

A
  • sacrum
  • lumber spinous process
  • lower 2 cervical process
  • iliac crest
29
Q

Insertion of illiocostalis lumborum

A
  • Angles of lower 6/7 ribs
30
Q

Origin of longissimus capitis

A
  • T1-T4 transverse processes

- T4-T7 articular processes

31
Q

Insertion of longissimus capitis

A
  • Mastoid process (posterior margin)
32
Q

Origin of longissimus cervicis

A
  • T1-T4/5 transverse process
33
Q

Insertion of longissimus cervicis

A
  • C2-C6 transverse process
34
Q

Origin of longissimus thoracis

A
  • blends with iliocostalis lumborum

- lumbar transverse processes

35
Q

Insertion of longissimus thoracis

A
  • T1-T12 transverse process

- Ribs 3-12 tubercles

36
Q

Origin of spinalis capitis

A
  • blends with semi-spinalis capitis
37
Q

Insertion of spinalis capitis

A
  • with semi-spinalis capitis
38
Q

Origin of spinalis cervicis

A
  • lower part of ligamentum nuchae

- spinous process of C7

39
Q

Insertion of spinalis cervicis

A
  • C2 (axis) spinous process
40
Q

Origin of spinalis thoracis

A
  • T10-L2 spinous process
41
Q

Insertion of spinalis thoracis

A
  • T1-T8 spinous process
42
Q

Which are the transversospinalies muscles?

A
  1. Semispinalis
  2. Multifundus
  3. Rotatores

Anatomy (7 decks)

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