Axial Skeleton Flashcards
sliding of the vertebrae; anterior/ventral displacement of one vertebra on adjacent; can be congenital
spondylolisthesis
herniated discs usually are found in the ______ region of the spinal cord due to the ________ ligament not being very broad
lumbar region; posterior longitudinal
abnormal or exaggerated lateral curvature of spine; can be congenital, neuromuscular, or idiopathic in origin
scoliosis
abnormal or lumbar curvature (concavity); associated with abnormalities, musculoskeletal problems, degenerative disease
hyperlordosis
abnormal or exaggerated thoracic curvature (convexity); can result from developmental abnormalities, trauma, or degenerative disease
hyperkyphosis
the intervertebral discs are the thickest in the _____ region
lumbar
fibrous outer layer of intervertebral discs
annulus fibrosus
inner layer of intervertebral discs
nucleus pulposus
small body that is wide side to side
cervical
heart shaped body that bears 2 costal demifacets
thoracic
large body that is kidney shaped
lumbar
short bifid spinous process that projects directly posteriorly
cervical
long sharp spinous process that projects inferiorly
thoracic
short blunt rectangular spinous process that projects directly posteriorly
lumbar
transverse processes that contain foramina
cervical
cervical vertebra that does not contain foramina
C7
transverse processes bear facets for ribs
thoracic
thin and tapered transverse processes
lumbar
triangular vertebral foramen
cervical and lumbar
circular vertebral foramen
thoracic
superior facets directed superoposteriorly
cervical
superior facets directed posteriorly
thoracic
superior facets directed posteromedially
lumbar
inferior facets directed inferoanteriorly
cervical
interior facets directed anteriorly
thoracic
inferior facets directed anterolaterally
lumbar
permits flexion/extension, lateral flexion, rotation
cervical
spine region with the greatest range of movement
cervical
permits rotation, slight lateral flexion; flexion/extension prevented
thoracic
permits flexion/extension, some lateral flexion; rotation prevented
lumbar