BASIC OSTEOLOGY - sacrum Flashcards Preview

Spinal Anatomy > BASIC OSTEOLOGY - sacrum > Flashcards

Flashcards in BASIC OSTEOLOGY - sacrum Deck (21):
1

what is the typical number of segments that unite to form the adult sacrum

5 segments

2

an imaginary line drawn along the dorsal midline of sacrum is identified as the

median sacral crest

3

what forms the median sacral crest

fused spinous processes and their spinous tubercles

4

an imaginary line drawn from the superior articular process of S1 to the sacral cornu will form what feature

intermediate sacral crest

5

what forms the intermediate sacral crest

fused articular processes and their facets

6

what features may be identified along the intermediate sacral crest

the mammillary process of S1 and the sacral cornu of S5

7

what is the remnant of the inferior articular process and facet of S5

the sacral cornu

8

what is the name of the inferior opening of the sacral spinal canal

the sacral hiatus

9

an imaginary line drawn from the transverse process of S1 to the inferior lateral sacral angle will form what feature

the lateral sacral crest

10

what forms the lateral sacral crest

the fused transverse processes and transverse tubercles from S1 to S5

11

what is the sacral tuberosity

the enlarged transverse tubercle of S2

12

what feature is associated with the transverse tubercle of S5

the inferior and lateral (inferolateral) sacral angle

13

from the anterior view, the intervertebral discs of sacrum will be replaced by what feature

transverse ridges

14

what is the name given to the openings that transmit the ventral sacral nerve rami

anterior sacral foramina, ventral sacral foramina, or ventral pelvic foramina

15

what feature is identified on the lateral surface of S1-S3

auricular surface

16

what feature does the anterior surface of the superior epiphyseal rim of S1 form

the sacral promontory

17

what is the sacral promontory

the buldging anterior surface of the superior epiphyseal rim of S1

18

what is the name given to the region of bone extending laterally from the S1 vertebral body looking from the base view

sacral ala

19

what forms the sacral ala

the costal element and true transverse process

20

what part of the sacral ala is derived from the costal element

the anterior 2/3

21

the costal element and true transverse process of sacrum unite to form what feature

the sacral ala