Sacrum

Question 1

What part of the sacral ala is derived from the costal elemene

Answer 1

the anterior two thirds

Question 2

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

Answer 2

the sacral ala

Question 3

how many firbrous (amphiarthrosis) syndesmosis joint surfaces are present on the S1 vertebral body

Answer 3

4

Question 4

how many joint surfaces are present on the vertebral body of the first sacral segment

Answer 4

5

Question 5

what muscles may attach to the first sacral vertebral body

Answer 5

psoas major

Question 6

What is the reported angulation of the first sacral articular facets

Answer 6

they lie vertically in the coronal plane

Question 7

what is the position of the sacral zygapophysis in adults

Answer 7

the zygapophysis lies in the coronal plane for L5/S1

Question 8

What is the orientation of the first sacral superior articular facet

Answer 8

BUM backward upward and medial typically concave

Question 9

what is the name given to the projection on the first sacral superior articular process

Answer 9

mammillary process

Question 10

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

Answer 10

transverse ridges

Question 11

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

Answer 11

median sacral crest

Question 12

what forms the median

Answer 12

fused spinous processes and their spinous tuvercles

Question 13

What is the name given to the congenital condition in which the fifth lumbar spinous process is elongated the sacrum exhibits spina bifida and dorsiflexion produces pain

Answer 13

Knife clasps syndrome

Question 14

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

Answer 14

intermediate sacral crest

Question 15

What forms the intermediate sacral crest

Answer 15

fused articular processes and their facets

Question 16

what features may be identified along the intermediate sacral creste

Answer 16

the mammillary process of S1 and the sacral cornu of S5

Question 17

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

Answer 17

the sacral cornu

Question 18

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

Answer 18

the sacral hiatus

Question 19

what forms the lateral sacral crest

Answer 19

the fused transverse processes and transverse tubercles from S1-S5

Question 20

What is the sacral tuberosity

Answer 20

the enlarged transverse tubercle of S2

Question 21

what is the name of the joint formed by the sacral tuberoisty

Answer 21

the accessory sacro-illiac joint

Question 22

what muscle is sadi to attach to the dorsal surface of sacrum

Answer 22

iliacus

Question 23

What feature is observed on the lateral surface of S1-S3

Answer 23

auricular surface

Question 24

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

Answer 24

synovial plane (diarthrosis arthrodia)

Question 25

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

Answer 25

the sacral promontory

Question 26

What ligament is attached to the sacral hiatus

Answer 26

the superficial posterior sacrococcygeal ligament

Question 27

how many synovial joint surfaces are typically present at sacral cornu

Answer 27

4

Question 28

what joint classifications are typically present at sacrum

Answer 28

fibrous (amphiarthrosis) syndesmosis
cartilaginous (amphiarthrosis) symphysis
synovial plane (diarthrosis arthrodia)

Question 29

what forms the posterior boundary for the fifth sacral spinal nerve intervertebral foramen

Answer 29

sacral cornu, coccygeal cornu, superficial posterior sacrococcygeal ligament, and intercornual ligament

Question 30

what fors the anterior boundary for the fifth sacral spinal nerve intervertebral foramen

Answer 30

vertebral body S5, vertebral body Co1, deep posterior sacrococcygeal ligament and intervertebral disc

Question 31

what is the homolog for the posterior longitudinal ligament at S5

Answer 31

deep posterior coccygeal ligament

Question 32

What is the homolog for the anterior longitudinal ligament at S5

Answer 32

anterior sacrococcygeal ligament

Question 33

What is the homolog for the ligamentum flavum at S5

Answer 33

superficial posterior sacrococcygeal ligament

Question 34

What forms the inferior boundary for the spinal canal

Answer 34

the union of the superficial posterior and deep posterior sacrococcygeal ligaments

Question 35

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

Answer 35

the posterior sacrococcygeal ligament

Question 36

what ligament is a homolog of the intertransverse ligament at S5

Answer 36

lateral sacrococcygeal ligament

Question 37

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

Answer 37

sacrospinous ligament

Question 38

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

Answer 38

sacro tuberous ligament

Question 39

Which ligament represents a thickening of the fibrous capsule of the sacro iliac joint

Answer 39

anterior sacro iliac ligament

Question 40

which ligament is the strongest of the sacro illiac ligament and is penetrated by dorsal rami of the sacral spinal nerves

Answer 40

interosseous sacro-iliac ligament

Question 41

which ligament will attach the intermediate sacral crest of S1, lateral sacral crest of S2 to the posterior superior iliac spine

Answer 41

short posterior sacro-iliac ligament

Question 42

which ligament attaches the lateral sacral crest of S3 and S4 to the posterior superior iliac spine

Answer 42

long posterior sacro-iliac ligament

Question 43

what is the homolog for the capsular ligament at S5

Answer 43

intercornual ligament