Vertebral Column Flashcards
how many cervical vertebrae are there?
7
how many thoracic vertebrae are there?
12
how many lumbar vertebrae are there?
5
how many sacral vertebrae are there?
5
how many coccygeal vertebrae are there?
4
which vertebrae have a transverse foramen? why?
cervical vertebrae for the vertebral artery
what vertebrae have motions associated with them?
cervical 7
thoracic 12
lumbar 5
total of 24
name the four curvatures of the SC
cervical
thoracic
lumbar
sacral
which curvatures are primary and which are secondary?
cervical and lumbar are secondary
thoracic and sacral are primary
do primary curvatures shape out or in?
primary shape out and secondary shape in
name the three abnormal curvature shapes in the SC
kyphosis
lordosis
scoliosis
describe the issue in kyphosis
accentuated thoracic curvature…called hunchback
describe the change to curvature in lordosis
accentuated lumbar curvature
what is the change in scoliosis?
abnormal lateral curvature and rotation of vertebral column
what two things make up the vertebral arch?
pedicles and laminae
which of pedicles or laminae articulate with the body of a vertebrae?
pedicles
how many processes do vertbrae have?
7
name the seven processes
four articular processes
two transverse processes
one spinous process
what two things make up a facet joint in the column?
between the superior and inferior articular processes of adjacent vertebrae
what type of joint is a facet joint?
synovial
what lies between the bodies of two vertebrae?
intervertebral discs
what are intervertebral discs made of? function?
cartilage for weight bearing and strength
what is the pars intra articularis?
bony strut between the superior and inferior articular process
what are the two parts of the intervertebral disc?
anulus fibrosus and nucleus pulposus
what is the role of the anulus fibrosus in the IV discs?
concentric layers of cartilage that adheres to the vertebral bodies
what is the role of the nucleus pulposus in the IV discs?
gelatinous mass that serves as shock absorber
what do spinal nerves pass through when coming out of the spinal cord?
intervertebral foramen
what two portions of the VC does most movement occur in ?
cervical and lumbar regions