Unit I Lec 6-7 Flashcards
disorder of vertebral column characterized by curves out of the frontal and transverse planes
scoliosis
gross anatomy of the vertebral column from superior to inferior
thoracic, cervical, lumbar, sacrum, coccyx
Describe line of gravity through the vertebral column
from lateral view, center of cervical spine, posterior to thoracic spine, middle of lumbar spine
Center of gravity of the vertebral column
sacral promontory
Location of the sacral promontory
base of sacrum
Infants are born with what type of curve
primary curve
Shape of primary curve in infants
anteriorly concave
Secondary curve that develops in infants
cervical curve, 3-4 mos
Tertiary curve that develops in infants
lumbar curve, 10-12 mos
Average length of vertebral column
72-75cm
Shape of cervical curve
anteriorly convex
Share of thoracic curve
anteriorly concave
Shape of lumbar curve
anteriorly convex
Shape of sacral curve
anteriorly concave
Two primary curves
thoracic and sacral
Two secondary curves
cervical and lumbar
Total number of vertebrae
33
Number of cervical vertebrae
7
Number of thoracic vertebrae
12
Number of lumbar vertebrae
5
Number of sacral vertebrae (fused)
5
Number of coccygeal vertebrae (fused)
4
Term for sacral vertebrae
sacrum
Term for coccygeal vertebrae
coccyx
Term for separation of sacral vertebrae, becomes L6
Lumbarization
Two main regions of a vertebra, anterior to posterior
body, neural arch
Features on right and left of neural arch, just off the body
pedicle
Features on the right and left of neural arch that closes in the vertebral canal
lamina
Bony protuberance in the posterior of the neural arch
spinous process
Bony protuberances on right and left of neural arch
transverse processes
Neural arches are joined by what type of joints
synovial joints
Neural arches can be what type of synovial jounts
plane joints
What bony structures create the joints between vertebrae
right and left, superior and inferior articular process with articular facet (4 processes nad facets per vertebra)
Articular cartilage is what type of cartilage
hyaline cartilage
Name of cartilage between the articular processes and facets
articular cartilage
Name of small piece of bone between the superior and inferior articular processes, easily injured
pars interarticularis
Name for fracture of pars interarticularis
spondylolysis
Term for slipage of pars interarticularis that accompanies spondylolysis
spondylolisthesis
Forward to the superior articular process is a divot called the
superior articular notch
Forward to the interfior articular process is a divot called the
inferior articular notch
The opening made by the articular notches is called
intervertebral foramen
What exits the intervertebral foramina
spinal nerve roots
Name of joint between inferior and superior facet
facet joint
Disk of cartilage between the body of vertebrae
intervertebral disk (IVD)
C7 vertebra is characterized by
large spinous process, not bifid
Cercical certebrae C3-C7 are characterized by
larger vertebral canal
C3-C6 are characterized by what shape spinous process
bifid spinous processes (split in two)
C3-C6 are characterized by what other openings
transverse foramina (left and right)
Transverse foramen enclose what
vertebral artery
Another process found only in cervical vertebrae, provides additional stability
uncinate process
Facet joints are at what approximate angle
45 deg
Body of thoracic vertebrae is _____ than cervical
larger
Names of thoracic vertebrae
T1-T12
Names of cervical vertebrae
C1-C7
Names of lumbar vertebrae
L1-L5
Angle of facets in thoracic vertebrae
60 deg
Name of facets on thoracic vertebrae
superior and inferior costal facets
Ribs attaching to inferior costal facets are named after ______ vertebra
lower
Lumbar vertebrae are characterized by what size body and vertebral canal
larger
Lumbar vertebrae are useful for what teo movements
flexion and extension of spine
What shape is the spinous process in lumbar vertebrae
shorter and thicker
What exits our of sacral foramina
nerves innervating lower body
Name of tube through sacrum
sacral canal
Names of three processes on posterior of sacrum
medial and lateral ridges
Bony features where sacrum articulates with coccyx
sacral cornu
Termination of sacral canal
sacral hiatus
Bony feature of coccyx that articulates with sacral horns
coccygeal horns
Bony features on both lateral sides of coccyx
transverse processes
Total number of fused segments in coccyx
4 fused segments
Name of joint between sacrum and coccyx
sacrococcygeal joint
Location of ligaments in sacrococcygeal joint
poster and 2 lateral sacrococcygeal ligaments
Term for delivering anesthesia to number caudal nerve roots
caudal block
Are vertebral joints cartilagenous?
Yes
What is a pivot joint in the vertebral column
atlantoaxial joint (C1-C2)
What is a condyloid joint in the vertebral column
atlanto occipital joint (C1-skull)
IVD is located in what joint
intervertebral joint
Name of out rings of the intervertebral joint
annulus fibrosis
Name of inner “jelly” of intervertebral joint
nucleas pulposus
Herniated disk is characterized by
nucleas pulposus being ejected from intervertebral joint
What ligament lies on the posterior of the vertebra body
posterior longitudinal ligament (PLL)
What ligament lies on the anterior of the vertebra body
anterior longitudinal ligament (ALL)
Describe thickness/thinness of PLL from cervical to lumber
thick to thin
Describe thickness/thinness of ALL from cervical to lumber
thin to thick
Term for bluging nucleas pulposus
herniated nucleas pulposus
Ligament that covers the tips of the spinous process and attaches to ligamentum nuchae, from C7 and below
supraspinous ligament
Ligament that provides stabilization and muscle attachment from C7 up
ligamentum nuchae
What movement tenses the vertebral ligaments of the neural arch
flexion
Segmental ligaments between spinous processes
interspinous ligaments
Ligaments between transverse processes
intertransverse ligaments
Ligaments between laminae
Ligamentum flavum