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Anatomy > Lecture 15: Deep back muscles > Flashcards

Lecture 15: Deep back muscles Flashcards

1
Q

Thoracolumbar fascia posterior lamina attaches

A

To the lumbar spinous process

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2
Q

Deep intrinsic muscle groups

A

Spinotransversalis
Erector spinae complex/sacrospinalis
Transversospinalis group

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3
Q

Epaxial muscles

A

Spinalis
Longissimus
Iliocostalis

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4
Q

Superficial extrinsic back muscles include, what is function

A 
Connect limb to axial skeleton
Trapezius
Latissimus dorsi
Levator scapulae
Rhom major
Rhom minor
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5
Q

Transversospinalis system runs from, concealed by, arise

A

Transverse processes to transverse processes
Concealed by erector spinae
Muscles arise laterally and insert medially

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6
Q

Intrinsic segmental muscles

A

Interspinales

Intertransversarii

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7
Q

Multifidus origin/insertion

A

O-From sacrum and surround structures and from transverse processes up to C4, including mammillary processes of lumbar vertebrae
I- On spinous processes C2-L5
Traverses 3 segments

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8
Q

Thoracolumbar fascia anterior lamina attaches

A

To lumbar transverse processes

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9
Q

Deep intrinsic superficial muscles

A

Splenius capitis

Splenius cervicis

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10
Q

Intermediate extrinsic back muscles function, include

A

Respiratory muscles
Serratus posterior superior
Serratus posterior inferior

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11
Q

Skin on either side of midline of back innervation

A

Dorsal rami of thoracic spinal nerves

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12
Q

Serratus posterior inferior action/innervation

A

Pull lower ribs inferiorly and counteracts diaphragm

Ventral rami of intercostals T9-12

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13
Q

Transversospinalis muscles attach, include, type of muscle

A 
Run laterally and insert medially. Run from transverse process to transverse process
Semispinalis
Multifidus
Rotatores
Deep intrinsic muscles
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14
Q

Spinotransversalis muscles attach, include, type of muscle

A

Run laterally and upward to attach to transverse processes and skull
Splenius capitis
Splenius cervicis
Superficial extrinsic muscle

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15
Q

Deep intrinsic deep back muscles include, system

A

Semispinalis
Multifidus
Rotatores
Transversospinalis system

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16
Q

Splenius capitis attachment

A

O- Spinous processes of C7 and T1-4

I- superior nuchal line and mastoid

17
Q

Lateral back skin innervation

A

Lateral cutaneous branches of the intercostal nerves

18
Q

Splenius cervicis attachment

A

O- Spinous processes of T3-6

I- C1-C4 transverse processes w/levator scapulae

19
Q

Splenius muscle group origin, fun fact

A

Ligamentum nuchae and spinous processes

These are the most superficial muscles of the neck

20
Q

Spinalis attachment

A

O- Spinous processes of T11-12

I- Spinous processes of thoracic and lower cervical vertebrae

21
Q

Iliocostalis Location, function, attachments

A

Lateral part of erector spinae group
Extends back, keeps erect posture
O- ilium and sacrum
I- most of the ribs

22
Q

Serratus posterior superior origin/insertion

A

O- Ligamentum nuchae; spinous processes of C7 and T1-2/3

I- Ribs 2-5

23
Q

Sacrospinalis/erector spinae muscles attach, include, type of muscle

A 
Run longitudinally upward and attach to transverse processes, ribs, and spinous processes
Iliocostalis
Longissimus
Spinalis
Intermediate intrinsic muscle
24
Q

Deep intrinsic intermediate muscles include, system

A

Iliocostalis
Longissimus
Spinalis
Sacrospinalis group

25
Q

Hypaxial muscles

A 
Quadratus
Lumborum
External/internal oblique
Transversus
Rectus abdominus
26
Q

Rotatores location, long vs short rotatores

A

Pass from root of transverse process to root of superior spinous process
Long rotatores- spans 2 segments
Short rotatores- spans 1 segment

27
Q

Thoracolumbar fascia middle lamina attaches

A

To lumbar transverse processes

28
Q

Multifidus description

A

Thick muscle mass

Best seen in region of sacrum

29
Q

Semispinalis location, components

A

Traverse a couple of vertebral levels
Thoracic
Cervicis
Capitis

30
Q

True intrinsic back muscle innervation

A

Dorsal rami

31
Q

Longissimus location, attachments

A

Middle portion of erector spinae group
O- Transversus processes and sacrum
I- Most of ribs

32
Q

Serratus posterior inferior origin/insertion

A

O- Spinous processes of T11-12 and L1

I- Ribs 10/9-12

33
Q

Serratus posterior superior action/innervation

A

Elevate upper ribs during inspiration

Ventral rami of intercostals T1-3(4)

Anatomy (34 decks)

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