Cervical Spine - 3 anatomy (all) Flashcards
how many cervical spine are there
7
number of thoracic spine
12
number of lumbar spine
5
number of sacral spine
5 fused
where do we find kyphotic curves
thoracic and sacral region
stable
where do we find lordodic curves in the spine
cervical and lumbar region
greater mobility
where are the pedicles found in the vert
right next to the vert body
connecting the body to the anterior arch
what is the function of the spinous process
serves as levers for the back extensors
cervical SP
thin and horizontal
thoracic SP
long and downwardly inclined
lumbar
thick and horizontal
what is the par interarticularis
the region between the sup and inf facet
what is spondylosis
this is a defect in the pars
what is spondylolisthesis
this is a fracture of the pars
this causes a shift
where does most spondylolisthesis occur
L5
what is the function of TP
levers for lateral flexors and rot
what region of the spine do we have the most movement
the lumbar and the cervical region
when does the spinal cord end
L1-L2
what is sacralization
when L5 or part of L5 fuses to the sacrum
what is lumbarlization
this is the incomplete fusion of S1 to the rest of the sacrum
what part of the disc is vulnerable to tearing
the annulus fibrosis
facet orientation - cervical
transverse plane
facet orientation - lower cervical
between the frontal and transverse plane
facet orientation - thoracic
frontal
facet orientation - upper lumbar
saggittal plane
facet orientation - lower lumbar
saggittal plane and frontal plane
what are the two structure of the disc
nucleus pulposus
annulus fibrosis
what happens to the nucleus pulpous
by the end of the first decade the gel begins to be replaced by the end of the first decade
by 60 the nucleus fibrosis not distinguished from the annulus fibrous
post lateral ligament in the lumbar spine
its denticulates and this allows for disc herniations in this region
post-lat disc herniation
what is myelopathy
compression of the cord
what is radiculopathy
describe pinching of the nerve roots as they exit the spinal cord
what is lumbar spinal stenosis
this is narrowinng of the spinal canal
what is an example of cause of myelopathy
spinal stenosis - this is narrowing of the
what is the function of unisegemtnal muscles
they stablize ajoining vert for the more effective action of the larger spinal muscles
what is the function of the suboccipital muscles
control movement of the skull in nodding and rotation
made up of three muscles
what is the function of the erector spinae - longissium
extension and lateral flexion of the spine and neck
what is the function of the mutlifudus
extension of the back
erector spinea - semispinalis
extension and contralateral rot of the spine
what are the typical cervical spine
C3 - C6
what are the atypical cervical spine
C2 C1 C7
what is the transverse foremen
this is for the vert artery
what is the articular pillar
column formed by the sup and inf articular process
C2 - C7
where is the intervert foremen located
between the sup and inf noteches of the pedicles
does C1 have body
no
does C1 have SP
no
what is the function of the C2 vert
pivot on which the atlas rotates
what is the den
the otontoid process
this is found on the axis and is what spins on the atlas
does C2 have a SP
yes
large and bifid
does C2 have a TP
yes
found underneath the mastoid
What is the function of the long ligament in the cerivcal spine
reinforces the intervert joint
what is the tectorial membrane
the crannial extension of the posterior long ligament
what is the function of the alar ligament
limit axial rotation and lateral bending on the contralateral side, and flexion secondarily
what is the function of the AO joint
nodding
what is the function of AA joint
rotation
what is the function of the transverse ligament
keeping the dens on the C1 during movement
what is the function of the cruciform ligament
prevents abnormal movements of the atlanto-axial joint
where does the cruciform ligament extend to
one up to the occipital bone
small band extends down to the body of the axis
what is rot limited by
the alar ligament
what is the total range of the AA joint
45
what do the scalene attach to
the ribs
scalene medius attachment
1st rib
scalene posterior attachment
2nd rib
what is the function of suboccipital muscle
control movement of the head in nodding and rot
what do we find the subocciptal triangle
vert art
C1 DPR - the suboccipital nerve
where does the vert art travel through
C1 - C6 in the transverse canal
side of the neck
what are the 5 D’s
dipolpia
dysphagia
dysarrthria
drop attack
dizziness
what are the 3 N’s
nystagmus
numbness
nausea/vomiting
where is the vert art most vunerable
the subocciptial triangle