Intermediate Sacrum Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. What do the transverse ridges on the pelvic surface of the sacrum represent?
- Sites of fusion between sacral vertebral bodies
- Origins of the gluteal muscles
- Attachments of the coccygeal vertebrae
- Borders of the sacroiliac joints
Q2. Which structures pass through the anterior sacral foramina?
- Femoral nerves
- Obturator nerves only
- Posterior rami of sacral spinal nerves only
- Anterior rami of sacral spinal nerves
Q3. Which structures pass through the posterior sacral foramina?
- Sciatic nerves
- Pudendal nerves
- Posterior rami of sacral spinal nerves
- Anterior rami of lumbar nerves
Q4. The median sacral crest is formed primarily by fusion of which structures?
- Costal processes
- Spinous processes
- Transverse processes
- Vertebral bodies
Q5. The intermediate sacral crests represent fusion of which vertebral structures?
- Vertebral bodies
- Articular processes
- Intervertebral discs
- Spinous processes
Q6. The lateral sacral crests are formed primarily by fusion of which structures?
- Vertebral bodies
- Transverse processes
- Spinous processes
- Articular processes
Q7. What are the sacral alae?
- Inferior projections of the coccyx
- Openings for sacral nerves
- Wing-like lateral expansions of the upper sacrum
- Fused spinous processes
Q8. What causes the sacral hiatus?
- Failure of lower sacral laminae to fuse posteriorly
- Absence of the S1 vertebral body
- Separation of the sacrum from the ilium
- Fusion of the coccyx to the pubis
Q9. Which projections flank the sacral hiatus inferiorly?
- Ischial spines
- Sacral cornua
- Pubic tubercles
- Sacral alae
Q10. Which part of the sacrum transmits body weight to the hip bones?
- Sacral alae and sacroiliac articulations
- Coccygeal cornua
- Posterior sacral foramina only
- Sacral hiatus alone