Ch. 8 Cervical and Thoracic Spine Flashcards
two main parts of a vertebra
body and vertebral arch
weight bearing part of the vertebrae
body
half ring of bone and helps make the vertebral foramen
vertebral arch
all of the vertebral foramen make up this which the spinal cord runs through
vertebral (spinal) canal
what is all on the arch of a vertebra
pedicles, laminae, a spinous process, and transverse processes
joints between the vertebral bodies
intervertebral joints
joints made up by the 4 articular processes
zygapophyseal joints
these joints are only in the tspine
costovertebral joints
these are made by the superior and inferior margins of adjoining pedicles
intervertebral foramina
spinal nerves and blood vessels pass through these
intervertebral foramina
fibrocartilaginous disks between the bodies of vertebrae except between C1 and C2
intervertebral disks
intervertebral disks contain an outer fibrous portion called what
annulus fibrosus
soft jelly line part of intervertebral disks
nucleus pulposus
when the nucleus pulposus protrudes through the fibrous layer of the intervertebral disks it presses on the spinal cord causing pain and discomfort, this condition is called
slipped disk; herniated nucleus pulposus (HNP)
the spinal canal contains the spinal cord and is filled with this
cerebrospinal fluid
enclosed and protected by the spinal canal
spinal cord
the spinal cord starts at this in the brain
medulla oblongata
the spinal cord runs all the way down to about this level
first lumbar vertebra
at the first lumbar vertebra, the spinal cord tapers off into this
conus medullaris
these are really tough disks which separate the vertebrae and provide cushion, spacing, movement, and stability
intervertebral disks
proper name for C1
atlas
the atlas has no vertebral body but what instead
anterior arch with an anterior tubercle
on the atlas is this which holds the odontoid (dens) in place
transverse atlantal ligament
the atlas has two superior articular processes which articulate with what
occipital condyles of the skull
what is the articulation between the skull and first vertebra called
atlantoocciptial joints
segment of bone between the superior and inferior articular processes of C1
lateral masses
this supports the weight of the head
C1
proper name for C2
axis
this is where rotation of the head occurts
axis - C2
zygapophyseal joint spaces of C1 adn C2 are only seen on this projection
AP open mouth projection
what do the transverse processes arise from on cervical vertebrae
pedicle and body
a typical cervical vertebrae has how many vertical formina
3
zygapophyseal joint spaces for C1-C7 are seen on this projection
lateral projection of c-spine
intervertebral foramina of C1-C7 are seen on this type of projection
45 degree oblique angle to the midsagittal plane and 15 degree cephalic tube angle
what is C7 called
vertebra prominens
how do you count vertebra on an AP projection
from C7 up
how do you count vertebrae on a lateral projection
from C1 down
which are typical t-spine vertebrae
T5-T8
each t-spine vertebrae have this for rib articulation
facet - full or demi-facets
each t-spine vertebrae accept a head of a rib to form this joint
costovertebral joint
these have costotransverse joints which articulate the transverse processes and a rib
T1-T10
which way do the inferior articular processes face on a t-spine vertebrae
forward
which way do the superior articular processes face on a the t-spine vertebrae
backwards
what is the meeting of the superior and inferior articular processes of vertebrae called
zygapophyseal joint spaces
zygapophyseal joint spaces of T1-T12 are seen on this type of projection
70 degree oblique position
intervertebral foramina of t-spine are seen on this type of projection
lateral projection of t-spine
what are the intervertebral foramina made from
superior and inferior margins of the pedicles
these have more dominant articular pillars
cervical vertebrae
instead of a spinous process, what does the atlas have
posterior tubercle with bifid tip
these contain demifacets for rib articulation
T1-T9
these contain single facets for rib articulation
T10-T12
what position will you see the zygapophyseal joints of the cervical spine
true lateral
what position will you see the intervertebral foramina of the cervical spine
45 degree oblique position with a 15-20 cephalad tube angle if your PO and you’ll see the upside, if your AO it would be 15-20 degree caudad tube angle and you’ll see the downside
what position will you see the intervertebral foramina of the thoracic spine
true lateral
what position will you see the zygapophyseal joints of the thoracic spine
70 degree oblique position, PO will see the upside and AO will see the downside
what level is the mastoid tip on
C1