Exam 2 Sacrum Flashcards
How many fibrous Amphiarthrosis syndesmosis joint surfaces are present on the S1 vertebral body
4
How many joint surfaces are present on the vertebral body of the first sacral segments
5
What muscles may attached to the first sacral vertebral body
Psoas major
What part of the sacral ala is derived from the Costoelement
The anterior two thirds
What is the position of the sacral zygapophyses in adults
The zygapophysis lies in the coronal plane for L5 S1
What is the orientation of the first sacral superior articular facet
Backward upward medial typically concave
What is the name given to the projection on the first sacral superior articular process
Mamillary process
From the anterior view the intravertebral disc of the sacrum will be replaced by what feature
Transverse ridges
An imaginary line drawn along the dorsal midline of sacrum is identified as the
Median Sacral crest
What forms the median sacral crest
Fused spinous processes and there spinous tubercles
An imaginary line drawn from the 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 facet
What features maybe identified along the intermediate sacral crest
The Mammillary process of S1 and the sacral Cornu of S5
What is the remnant of the inferior articular process and facet of S5
Sacral Cornu
What is the name of the inferior opening of the sacral spinal canal
Sacral hiatus
What forms the lateral Sacral crest
The fuse transverse processes and the transverse tubercles from S1 to S5
What is the sacral tuberousity
The enlarged transverse tubercle of S2
What is the name of the joint formed by the sacral tuberosity
The accessory sacroiliac joint
What muscle is said to attach to the dorsal surface of sacrum
Iliacus
What feature is identified on the lateral surface of S1-S3
Auricular surface
What classification of joint is formed by the auricular surface of sacrum
Synovial plane diarthrosis arthrodia
What feature does the anterior surface of the superior epiphyseal rim of S1 form
The sacral promontory
What ligament is attached to the Sacral hiatus
The superficial posterior sacrococcygeal ligament
What is the homolog for the ligamentum Flavum at S5
Superficial posterior Sacrococcygeal ligament
What forms the inferior boundary for the spinal canal
The union of the superficial posterior and Deep posterior Sacrococcygeal ligaments
What ligament is formed by the union of the superficial posterior sacrococcygeal and the deep posterior sacrococcygeal ligaments at Co1
The posterior sacrococcygeal ligament
What ligament is a homolog of the intertransverse ligament at S5
Lateral sacrococcygeal ligament
What ligament divides the sciatic foramen into the greater and lesser sciatic foramina
Sacro spinous ligament
Which ligament has a broad attachment along the lateral margin of sacrum and coccyx and then attaches to the ischial tuberosity
Sacrotuberous ligament
Which ligament represents a thickening of the fibrous capsule of the sacroiliac joint
Anterior sacral iliac ligament
Which ligament is the strongest of the sacroiliac ligaments in is penetrated by the dorsal Rami of the sacral spinal nerves
Interosseus sacroiliac ligaments
What is the homolog for the superior articular process and facet of co1
Coccygeal Cornu
What is the homolog for the capsular ligament at S5
Intercornual ligament
