really the last set for ex. 1 sacrum QQ Flashcards
what is the curvature of the superior articular facets of T12?
they are said to be slightly concave
what is the curvature of the inferior articular facets of T12?
they are slightly convex
what is the orientation of the spinous process of T12?
posterior and horizontal
what is the name of the elevation near the origin of the lumbar transverse process?
accessory process
what is the name of the lamina-pedicle junction of a typical lumbar vertebra?
pars-interarticularis
what is the name given to the projection on the lumbar superior articular process?
mammillary process
what characteristic of the L1-L4 pedicle may be used to differentiate it from the L5 segment?
on cranial view, the lateral surface of the pedicle is apparent on an L1-L4 segment. At L5, the transverse process originates from the vertebral body, pedicle and lamina-pedicle region
what is the typical number of segments that unite to for the adult sacrum?
5 segments
line drawn along the dorsal midline of the sacrum is identified as
median sacral crest
what forms the median sacral crest?
fused spinous processes and their spinous tubercles
line from superior articular process of S1 to the sacral cornu will form what feature?
intermediate sacral crest
what forms the intermediate sacral crest?
fused articular processes and their facets
what features may be identified along the intermediate sacral crest?
mammillary process of S1 and sacral cornu of S5
what is the remnant of the inferior process and facet of S5?
sacral cornu
what is the name of the inferior opening of the sacral spinal canal?
sacral hiatus
line drawn from transverse process of S1 to the inferior lateral sacral angle will form what feature?
lateral sacral crest
what forms the lateral sacral crest?
fused transverse processes and transverse tubercles from S1 to S5
what is the sacral tuberosity?
enlarged transverse tubercle of S2
from the anterior view, the intervertebral discs of sacrum will be replaced by what feature?
transverse ridges
what is the name given to the openings that transmit the ventral sacral nerve rami?
anterior sacral foramina
ventral sacral foramina
ventral pelvic foramina
what feature is identified on the lateral surface of S1-S3?
auricular surface
what feature does the anterior surface of the superior epiphyseal rim of S1 form?
sacral promontory
what is the sacral promontory?
bulging anterior surface of the superior epiphyseal rim of S1
what is the name given to the region of bone extending laterally from the S1 vertebral body looking from the base view?
sacral ala
what forms the sacral ala?
costal element and true transverse process
what part of the sacral ala is derived from the costal element?
anterior 2/3
