PAS407 Vertebral Column UPDATED ACTUAL Questions and CORRECT Answers
Axis rotational element of the axial skeleton
Vertebral Column 33 vertebrae, 23 vertebral disks
IV disks make up 1/4 length and changes through the day
provides framework for axial skeleton, allows us to stand
Functions of the vertebral column upright (movement depends on architecture), protects
from blunt trauma
Cervical vertebrae 7 vertebrae
Thoracic vertebrae 12 vertebrae
Lumbar vertebrae 5 vertebrae
Sacral vertebrae 5 fused vertebrae
coccygeal vertebrae 4 fused vertebrae
larger than superior vertebrae due to increase in weight
Inferior vertebrae
bearing further down column
The phenomenon reverses here: size decreases into the
Sacrum coccyx due to inferolateral diffusion of weight into the
limbs
anterior segment of the vertebrae, cylindrical block shape.
Main support for the column. Increases in size in the lower
vertebrae for greater base of support
Body
outer shell of the body dense, compact bone, rigid support.
spongy trabecular (cancellous bone), lightweight sup-
port
, Inner core of the body
think: sponge toffee
loss of bone mineral content/bone density. Appears ra-
osteoporosis diographically as vertical striations with central column
collapse
centrum primary ossification center (inner core)
secondary ossification center located on circumference of
epiphyseal ring
superior/inferior surface
(yellow) posterior archway over vertebral foramen, re-
sponsible for spinal cord protection
Arch
(green) "Feet" of the arch, anchors arch to body
pedicles
concave superior/inferior surfaces of pedicles. Form 1/2
of intervertebral foramen
vertebral notches
lamina
Axis rotational element of the axial skeleton
Vertebral Column 33 vertebrae, 23 vertebral disks
IV disks make up 1/4 length and changes through the day
provides framework for axial skeleton, allows us to stand
Functions of the vertebral column upright (movement depends on architecture), protects
from blunt trauma
Cervical vertebrae 7 vertebrae
Thoracic vertebrae 12 vertebrae
Lumbar vertebrae 5 vertebrae
Sacral vertebrae 5 fused vertebrae
coccygeal vertebrae 4 fused vertebrae
larger than superior vertebrae due to increase in weight
Inferior vertebrae
bearing further down column
The phenomenon reverses here: size decreases into the
Sacrum coccyx due to inferolateral diffusion of weight into the
limbs
anterior segment of the vertebrae, cylindrical block shape.
Main support for the column. Increases in size in the lower
vertebrae for greater base of support
Body
outer shell of the body dense, compact bone, rigid support.
spongy trabecular (cancellous bone), lightweight sup-
port
, Inner core of the body
think: sponge toffee
loss of bone mineral content/bone density. Appears ra-
osteoporosis diographically as vertical striations with central column
collapse
centrum primary ossification center (inner core)
secondary ossification center located on circumference of
epiphyseal ring
superior/inferior surface
(yellow) posterior archway over vertebral foramen, re-
sponsible for spinal cord protection
Arch
(green) "Feet" of the arch, anchors arch to body
pedicles
concave superior/inferior surfaces of pedicles. Form 1/2
of intervertebral foramen
vertebral notches
lamina
