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ANATOMY OF THE TRUNK > WEEK 4 > Flashcards

WEEK 4 Flashcards

Musculature of the Vertebral Column (50 cards)

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1
Q

Where do myoblasts from the epimere originate from?

A

Dorsal medial lip become epaxial muscles

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2
Q

Where do myoblasts from the hypomere originate?

A

Ventral Lateral Lip becomes hypaxial muscle

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3
Q

Are prevertebral muslces intrinsic or extrinsic?

A

Both, intrinsic and extrinsic

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4
Q

Why do hypaxial muscles not move the vertebral column

A

prevertebral

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5
Q

What muscles groups make up the deep intrinsic musculature?

A

Intertransversarii

Interspinales

Transverso-spinales

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6
Q

Where is the interspinales muscle and the ligament that runs medially?

A

Located between spinous processes

Lateral to the interspinous ligament

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7
Q

Where is the Intertransversarii located and what ligament runs anteriorly and posteriorly and what is its action?

A

Located: Between TVP

Ant/Pos to intertransverse ligament

Action: proproreceptive, too thin to provide structural support

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8
Q

Name the three groups of muscles of the Transversospinales muscles

A

Semispinales

Multifidus

Rotatores

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9
Q

Name the three subgroups of the semispinales

A

Semispinales capitis

Semispinales cervicis

semispinales thoracis

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10
Q

name the three subgroups of the rotatores

A

Rotatores lumborum

Rotatores thoracis

Rotatores cervicis

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11
Q
A
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12
Q
A
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13
Q

What is the O + I of Semispinalis capitis?

A

O: TVP of cervical and thoracic spine

I: nuchal ligament

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14
Q

What part of the vertebrae is the semispinalis muscles best identified in?

A

Cervical Spine

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15
Q

What part of the vertebrae is the multifidus most developed?

A

Lumbar spine

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16
Q

What part of the vertebae is the rotatores well developed in?

A

Thoracic spine

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17
Q

What do all the Transversospinales muscle s(semispinalis, multifidus, rotatores) have in common regarding their location?

A

They all run from TVP inferiorly to SP superiorly

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18
Q

What is the O + I of the Semispinalis cervicis?

A

O: TVP of upper throacic spine

I: SP of cervical spine

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19
Q

What is the O + I of the semispinalis thoracis?

A

O: TVP of lower thoracic spine

I: SP of upper thoracic and lower cervical spine

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20
Q

What are the actions of the semispinalis muscle group?

A

Bilateral = Extend the head

Unilateral = Rotates to controlateral spine

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21
Q

how many laminar segments do the Rotatores brevis skip?

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A

1 lamina segment

22
Q

how many laminar segments do the rotatores longus extend to?

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A

2 laminar segments

23
Q

What are the actions of the rotatoes?

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A

proproreception

postoral control

24
Q

What is the O + I of the Multifidus?

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A

O: Posterior superior illiac spine

I: Spinous Processes if cervical, lumbar and thoracic spine

25
Where do the fibers of the multifidus originate?
Mamillary processes
26
What are the actions of the multifidus?
- extention of the spine. no FLEXION - proproreception - vertebral inter-segmental stabilisation
27
What is the O + I of the Levator costarum?
O: TVP of thoracic vertebrae I: inferior rib between tubercle and angle
28
what is hte action of the levator costarum?
proprorection elevate the ribs in respiration
29
what is the embryology and innovation of the levator costarum?
Embryology: Epaxial muscle, from the dorsal medial lip Innovated by the dorsal primary ramus
30
What are the sub-occipital muscles of the deep intrinsic musculature?
- rectus capitis posterior major - rectus capitis posterior minor - oblique captis superiorus - oblique capitis inferioris
31
rectus capitis posterior major O + I and embryology?
O: SP of C2 I: Lateral part of inferior nuchal line Epaxial
32
Rectus capitis posterior minor O + I and embryology?
O: Posterior tubercle of C1 I: Medial ipart of the occipital bone below the inferior nuchal line Epaxial
33
What are the actions of the rectus capitis posterior major and minor?
Stabalizes the Atlanto-axial and atlanto-occipital joints Unilateral: Ipsilateral rotation Bilateral: Extend the head at the A-O joint
34
What is the Obliquus capitis superioris O + I and action?
O: TVP of C1 I: Inferior nuchal ligament of occipital bone A: Unilateral = lat flex Bilateral = Extend the head at the A-O joints
35
What is the O + I and action of the Obliquues Capitis Inferioris?
O: SP of C2 I: TVP of C1 A: Bilaterally = Extends head at A-O Joint Unilaterally = Ipsilateral roation of the A-A joint
36
What are the intermediate intrinsic musculature of the back (erector spinae group)?
Erector spinae divides into three sections: - iliocostalis - longissimus - spinalis
37
What are the three parts of the ilicostalis muscles of the erector spinae?
Iliocostalis cervicis iliocostalis thoracis iliocostalis lumborum
38
What is the O + I of the iliocostalis cervicis?
O: angle of upper ribs (posteriorly) I: Posterior tubercle of cervical vertebrae
39
What is the O + I of the iliocostalis thoracis
O: Lower 6 ribs I: angles of the upper 6 ribs
40
what is the O + I of the iliocostalis lumborum?
O: Common tendon of the erector spinae I: Angles of lower 6 ribs
41
What are the three muscles of the longissimus?
Longissimus capitis Longissimus cervicis Longissius thoracis
42
What is the orientation and insertion of the longissimus capitis?
O:Mastoid ptcoess of temporal bone I: TVP of upper thoracic vertebrae
43
what is the orienation and insertion of the longissimus cervicis?
O: TVP of thoracic spine I: Posterior tubercles of cervical vertebrae
44
what is the orientation and insertion of the longissimus thoracis?
O: Common tendon of Erector spinale I: TVP of lumbar and thoracic vertebrae + all ribs following
45
What are the three spinalis muscles (from erector spinae intermediate intrinsic musculature)?
Spinalis capitis Spinalis cervicis Spinalis thoracis
46
Which spinalis muscle from the intermediate intrinsic musculatre of the erector spinae does not really exist?
Spinalis capitis muscle | (moves in mysterious ways)
47
What are the O +I of the spinalis cervicis?
O: Nuchal ligament I: SP of C2
48
What is the O + I of Spinalis Thoracis?
Blends with longissimus laterally O: SP LOWER THORACIC AND UPPER CERVICLE I: T1-4 spinous process
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ANATOMY OF THE TRUNK (3 decks)

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