Vertebral Column Flashcards
Kyphosis
convex curvature of spine
thoracic and sacral
excessive: hunchback
Lordosis
concave curvature of spine
cervical and lumbar
excessive: swayback/hollow back
Scoliosis
abnormal lateral curvature of spine
Vertebral foramen sizes
largest: cervical
middle: lumbar
smallest: thoracic
* to accomodate cervical and lumbar enlargements of spinal cord
Primary curvatures of spine
develop during fetal period and remain throughout life
thoracic and sacral kyphosis
Secondary curvatures of spine
not obvious until infancy
cervical and lumbar lordosis
Regions of spine (5)
cervical thoracic lumbar sacral coccygeal
Total # of vertebrae
33
of C vertebrae
7
of T vertebrae
12
of L vertebrae
5
of S vertebrae
5
of Co vetebrae
4
Functions of vertebral column (4)
muscle attachment/movement
restriction of movement (stability)
protection of spinal cord
support of body weight
Parts of Vertebrae (5)
body arch vertebral foramen vertebral notches processes (spinous, transverse, and articular)
Vertebral arch
formed from pedicles and laminae
Vertebral foramen
forms the vertebral canal (central canal)
contains spinal cord, meninges, fat, nerve roots, blood supply
Vertebral notch
notches form IV foramina (lateral recess)
houses spinal nerve roots
Vertebral processes
1 spinous process
2 transverse processes
4 articular processes
Function of spinous/transverse processes
muscle attachment and movement
Function of articular processes
restriction of movement
Function of vertebral notch
protection of spinal cord
Function of vertebral body
support of body weight