Intermediate Foramen Magnum Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. At approximately what level does the medulla become continuous with the spinal cord?
- At the foramen magnum
- At the jugular foramen
- At the sella turcica
- At the optic canal
Q2. Which dural structure continues inferiorly through the foramen magnum as spinal dura mater?
- Cranial dura mater
- Falx cerebri only
- Periosteum of the mandible
- Tentorium cerebelli only
Q3. Which ligamentous continuation of the posterior longitudinal ligament passes through the foramen magnum to attach to the cranial base?
- Sphenomandibular ligament
- Ligamentum flavum
- Stylohyoid ligament
- Tectorial membrane
Q4. Which ligament passes superiorly from the dens toward the anterior margin of the foramen magnum?
- Nuchal ligament
- Transverse ligament of the atlas
- Interspinous ligament
- Apical ligament of the dens
Q5. Which paired ligaments extend from the dens to the medial sides of the occipital condyles?
- Stylohyoid ligaments
- Cruciate ligaments of the knee
- Ligamenta flava
- Alar ligaments
Q6. Which venous structures communicate through the foramen magnum region between intracranial and vertebral venous systems?
- Portal and pulmonary veins
- Great saphenous and azygos veins
- Facial and cephalic veins only
- Vertebral and intracranial venous plexuses
Q7. Which arteries supply the posterior spinal cord and may arise from or receive contributions from the vertebral arteries near the foramen magnum?
- Posterior spinal arteries
- Superior thyroid arteries
- Lingual arteries
- Anterior cerebral arteries
Q8. What is the relationship of the hypoglossal canals to the foramen magnum?
- Within the center of the foramen magnum
- Inside the mandibular rami
- Posterior to the mastoid processes only
- Anterolateral to the foramen magnum
Q9. Which skull-base surface is formed by the basilar part of the occipital bone anterior to the foramen magnum?
- Zygomatic arch
- Orbital floor
- Clival region
- Nasal septum
Q10. Which structures ascend through the foramen magnum before the spinal accessory nerve exits the skull?
- Spinal rootlets of the accessory nerve
- Motor root of the trigeminal nerve
- Chorda tympani
- Greater petrosal nerve