Sacrum

Question 1

part of sacral ala that is derived from the true costal element

Answer 1

anterior 2/3

Question 2

of fibrous (amphiarthrosis) syndesmosis joint surfaces present on S1 vertebral body

Answer 2

4

Question 3

of joint surfaces present on vertebral body of the 1st sacral segment

Answer 3

5

Question 4

position of the sacral zygapophysis in adults

Answer 4

coronal plane for L5/S1

Question 5

orientation of S1 superior articular facet

Answer 5

BUM, typically concave

Question 6

name given to the projection on S1 superior articular process

Answer 6

mammillary process

Question 7

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

Answer 7

transverse ridges

Question 8

what is the imaginary line drawn along the dorsal midline of sacrum

Answer 8

median sacral crest

Question 9

formed the medial sacral crest

Answer 9

fused spinous processes and their spinous tubercles

Question 10

what does the imaginary line drawn from the superior articular process of S1 to the sacral cornu form?

Answer 10

intermediate sacral crest

Question 11

forms the intermediate sacral crest

Answer 11

fused articular processes and their facets

Question 12

fearture ID’ed along the intermediate sacral crest

Answer 12

mammillary process of S1 and the sacral cornu of S5

Question 13

the remnant of the inferior articular process and facet of S5

Answer 13

sacral cornu

Question 14

name of the inferior opening of the sacral spinal canal

Answer 14

sacral hiatus

Question 15

forms the lateral sacral crest

Answer 15

fused transverse processes and transverse tubercles of S1 to S5

Question 16

what is the sacral tuberosity

Answer 16

enlarged transverse tubercle of S2

Question 17

name of the joint formed by the sacral tuberosity

Answer 17

accessory sacro-iliac joint

Question 18

muscle said to attach to the dorsal surface of sacrum

Answer 18

iliacus

Question 19

feature ID’ed on the lateral surface of S1-S3

Answer 19

auricular surface

Question 20

classification of joint that is formed by the auricular surface of sacrum

Answer 20

synovial plane (diarthrosis arthrodia)

Question 21

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

Answer 21

sacral promontory

Question 22

ligament attached to the sacral hiatus

Answer 22

superficial posterior sacrococcygeal ligament

Question 23

homolog for the ligamentum flavor at S5

Answer 23

superficial posterior sacrococcygeal ligament

Question 24

forms the inferior boundary for the spinal canal

Answer 24

union of the superficial posterior and deep posterior sacrococcygeal ligaments

Question 25

what ligament is formed by the union of superficial posterior sacrococcygeal and the deep posterior sacrococcygeal ligaments at Co1

Answer 25

posterior sacrococcygeal ligament

Question 26

ligament that is a homolog of the intertransverse ligament at S5

Answer 26

lateral sacrococcygeal ligament

Question 27

ligament divides the sciatic foramen into the greater and lesser sciatic foramina

Answer 27

sacrospinous ligament

Question 28

ligament that has a broad attachment along the lateral margin of sacrum and coccyx and then attaches to the ischial tuberosity

Answer 28

sacrotuberous ligament

Question 29

ligament that represents a thickening of fibrous capsule of the sacro-iliac joint

Answer 29

anterior sacro-iliac ligament

Question 30

ligament that is the strongest of the sacro-iliac ligaments and is penetrated by the dorsal rami of the sacral spinal nerves

Answer 30

interosseious sacro-iliac ligament

Question 31

homolog for the capsular ligament at S5

Answer 31

intercornual ligament