lumbar outline Flashcards
the vertebral body of L5 is the ________ of the lumbar vertebrae.
largest
true or false
the anterior height of L5 vertebral body is greater than the posterior height?
true
the transverse process of L5 is large and originates from what three places?
vertebral body
pedicle
lamina-pedicle junction
the spinous process of L5 is the _________ of all lumbar vertebrae.
shortest
how many lumbar vertebra are there?
5 on average
how many secondary centers of ossification are there in the lumbar vertebrae?
7
what are the seven secondary centers of ossifciation?
superior and inferior epiphyseal rims
right and left transverse processes
spinous process
right and left mammillary processes
what are the typical lumbar vertebrae?
(L1-L4)
what is the shape of the vertebral body of the typical vertebrae when seen in a superior view?
reniform
is the vertebral body of L2-L4 higher anteriorly or posteriorly?
the posterior height is slightly greater than the anterior height
on L1-L3 what increases in size?
the lateral width
what is the pedicle orientation on the typical lumbar vertebrae?
primarily posterior, similar to the thoracic vertebrae
the superior vertebral notch/incisure of the typical lumbar vertebrae is what size?
small (between cervical and thoracic depths)
the inferior vertebral notch/incisure of the typical lumbar vertebrae is?
Deep (between cervical and thoracic depths)
describe the intervertebral foramen of the typical lumbar vertebrae?
faces laterally (upside-down) pear shape in outline
the specific spinal nerve exiting the intervertebral foramen is identified according to?
the vertebra making up the superior border of the intervertebral foramen
the lamina of the typical lumbar is?
broad, top to bottom
the shingling of the lamina continues from the thoracic region but diminishes from?
L1 to L5
what is the shape of the vertebral foramen of the typical lumbar vertebrae?
triangular in shape
smaller than in the cervical region, but larger than in the thoracic region
how does the transverse process of the typical lumbar vertebrae project?
projects laterally and slightly posteriorly from the lamina-pedicle junction
in the typical lumbar vertebrae what is thin and slender and increases in length from L1 to L3, then decreases from L3 to L5
the transverse process
where is the accessory process located in the typical lumbar vertebrae?
at the posterio-inferior root of the transverse process
the costal element of thetypical lumbar vertebrae forms most of the?
transverse process, including the transverse tubercle
the costal element of the typical lumbar vertebrae may occasionally develop into a?
lumbar rib, usually at L1
the true transverse process includes the?
accessory process
what direction does the superior articular facet face on the typical lumbar vertebrae?
faces backward, upward, and medial (BUM)
facet is usually concave
what direction does the mammillary process project on the typical lumbar vertebrae?
projects posterio-laterally from the superior articular facet
what direction does the inferior articular facet face on the typical lumbar vertebrae?
faces forward, laterally, and downward. (FoLD)
Facet is usually convex
on the typical lumbar vertebrae the distance between the right and left superior articular process is _________ than that between the right and left inferior articular process distance.
greater
which has a greater distance? the right and left superior articular process or the right and left inferior articular process
the distance between the superior right and left articular process is greater than inferior
the pars articularis of the typical lumbar vertebrae is more robust than the?
thoracic region
consists entirely of compact bone
describe the spinous process of the typical lumbar vertebrae?
short anterior to posterior,
deep superior to inferior
narrow laterally
what is the shape of the spinous process of the typical lumbar vertebrae?
hatchet shaped
what is the direction of the spinous process of the typical lumbar vertebrae?
directs posteriorly, with a large spinous tubercle
