what is the main action of the semispinalis?

extend head, thoracic & cervical regions of vert. col, rotate contralateral

where do the rotatores (brevis and longus) INSERT?

spinous processes of thoracic vertebrae

where do the rotatores (brevis and longus) ORIGNATE?

transverse processes of vertebrae

which muscles are included in the transversospinalis?

semispinalis, multifidus, rotatores

what muscles are deep to the transversospinalis muscles?

interspinalis, intertransversarii, levatores costarum, occipital traingle

what ligament aids in movement of transversospinalis muscles?

posterior longitudinal ligament

what is the general location of the transversospinalis as a whole?

between the transverse and spinous processes

where does the multifidus INSERT?

all spinous proceses 2-4 segments superior to origin

where does the multifidus ORIGINATE?

thoracol fasc, il spine, sacro-il lig, trans proc. T1-T3, art proc. C4-C7

What is the main action of the transversospinalis muscles as a group?

extension of vertebral column and head

Collectively, where do the transversospinalis muscles INSERT?

spinous processes of more superior vertebrae

what is the rotatores (brevis and longus) main action?

stabilize vertebrae, local extension and rotary movements, proprioception

where does the semispinalis (thoracis, cervicis, capitis) INSERT?

occipital bone, spinous processes of upper thoracic and cervical regions

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TRANSVERSPINALIS MUSCLES

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specific transversospinalis muscles

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Questions 21

Answers

1
what is the main action of the semispinalis?
extend head, thoracic & cervical regions of vert. col, rotate contralateral
flexion of neck and aids in atlanto-axial joint movement
aids in stability and prevents hyperflexion of neck
laterally bends neck and preserves posture
2
where do the rotatores (brevis and longus) INSERT?
transverse processes of thoracic vertebrae
between the angle and tubercle of ribs 7-12
spinous processes of thoracic vertebrae
medially on the ribs superior surface
3
where do the rotatores (brevis and longus) ORIGNATE?
transverse processes of vertebrae
transverse processes of only cervical vertebrae
spinous processes of T1-T12
spinous processes of vertebrae
4
which muscles are included in the transversospinalis?
semispinalis, multifidus, rotatores
spinalis, multifidus, rotatores
lumborum, thoracis, cervicis, capitis
semispinalis, multifidus, levatores costarum
5
what ligament opposes movements of the transversospinalis?
posterior longitudinal ligament
nuchal ligament
alar ligament
anterior longitudinal ligament
6
where does the semispinalis (thoracis, cervicis, capitis) ORIGINATE?
C4-T12 transverse processes
C2-C4 transverse processes and T1-T6 spinous processes
occipital bone
C4-T12 spinous processes
7
what muscles are deep to the transversospinalis muscles?
interspinalis, intertransversarii, levatores costarum, occipital traingle
serratus posterior, levatores costarum
spinalis cervicis, spinalis capitis
splenius capitis, splenius cervicis
8
Collectively, where do the transversospinlis muscles ORIGINATE?
transverse processes
vertebral body
spinous processes of more superior vertebrae
nuchal ligament
9
where is the multifidus most prominent?
thoracic region
lumbar region
cervical region
thoracic and cervical regions
10
what ligament aids in movement of transversospinalis muscles?
anterior longitudinal ligament
alar ligament
posterior longitudinal ligament
nucha ligament
11
what is the general location of the transversospinalis as a whole?
between the transverse and spinous processes
lateral to the transverse processes
medial to the transverse processes
in between the rib angles
12
which is the deepest layer of the transversospinalis muscles?
rotatores
semispinalis
multifidus
spinalis
13
where does the multifidus INSERT?
transverse processes T5-L5
all spinous proceses 2-4 segments superior to origin
all limina
all transverse processes
14
where does the multifidus ORIGINATE?
tectorial membrane, posterior longitud ligament, spinous processes L1-L5
thoracol fasc, il spine, sacro-il lig, trans proc. T1-T3, art proc. C4-C7
promontory of sacrum, supraspinous ligament, interspinous ligament
spinous processes C2-L5
15
what is the main action of the multifidus?
stabilize vertebral column
extend vertebral column
flex vertebral column
rotate vertebral column
16
What is the main action of the transversospinalis muscles as a group?
extension of vertebral column and head
lateral bending of vertebral column and head
flexion of vertebral column and head
stabilization of vertebral column and head
17
Collectively, where do the transversospinalis muscles INSERT?
nuchal ligament
transverse processes
spinous processes of more superior vertebrae
vertebral body
18
what does the semispinalis capitis cover?
semispinalis cervicis
splenius
suboccipital triangle
trapezius
19
what muscle is superficial to the transversospinalis muscles?
erector spinae
intertransversarii
splenius
interspinalis
20
what is the rotatores (brevis and longus) main action?
flexion of back
rotate thoracic region of vertebral column, laterally bend vertebral column
lift ribs during respirations
stabilize vertebrae, local extension and rotary movements, proprioception
21
where does the semispinalis (thoracis, cervicis, capitis) INSERT?
C2-C4 transverse processes
medial nuchal ligament, C2 spinous process
in b/w the sup. occipital line and the infer occipital line, tubercle of C1
occipital bone, spinous processes of upper thoracic and cervical regions

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