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Flashcards in Sacrum Deck (23):
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 IDed as the____?

Median sacral crest

3

What forms the median sacral crest?

Fused spinous processes and their spinous tubercles

4

An imaginary line drawn form the superior articular process of S1 to the sacral Cornu will form what feature?

Intermediate sacral crest

5

What forms the intermediate sacral crest?

Fuse articular processes and their facets

6

What features may be IDed 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 one drawn form 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 used traverse 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 e replied by what feature?

Transverse ridges

14

What is the name given to the openings that rains it the ventral sacral nerve rami/

Anterior sacral foramina, ventral sacral foramina, or ventral pelvic foramina

15

What feature is IDed 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 teh 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 form the S1 vertebral body looking form the base view?

Sacral all

19

What forms the sacral ala?

The costal element and true transverse process

20

What part to eh sacral ala is derived from the costal element?

The anterior two-thirds

21

What is the typical number of segments that unite to form the adult coccyx?

4 segments

22

What bony features are present on the coccyx?

All segments are represented by a "vertebral body"; in addition, Co1 has a coccygeal Cornu and transverse process.

23

What is the homolog of the superior articular process and facet on Co1?

Coccygeal Cornu