Intermediate Vertebral Artery Quiz

Q1. What does the V1 segment of the vertebral artery extend between?

• C6 and C2 transverse foramina only
• C1 transverse foramen and foramen magnum
• Subclavian origin and entry into the C6 transverse foramen
• Foramen magnum and basilar union

Q2. What characterizes the V2 segment of the vertebral artery?

• It courses entirely inside the cranial cavity
• It runs through the vertebral canal below the spinal cord
• It crosses the cavernous sinus
• It ascends through the cervical transverse foramina from C6 to C2

Q3. What is the V3 segment of the vertebral artery?

• The intracranial segment ending at the basilar artery
• The segment inside the cavernous sinus
• The extradural segment from C2 around the atlas to dural penetration
• The segment within the thoracic cavity

Q4. After leaving the transverse foramen of C1, where does the vertebral artery commonly course?

• In a groove on the superior surface of the posterior arch of C1
• Inside the body of C1
• Within the carotid canal
• Along the anterior surface of the mandible

Q5. Which membrane is crossed by the vertebral artery during its course from the atlas toward the foramen magnum?

• Posterior atlanto-occipital membrane
• Anterior longitudinal ligament only
• Falx cerebri
• Tentorium cerebelli

Q6. Which artery is formed in part by branches from both vertebral arteries and descends along the anterior spinal cord?

• Middle meningeal artery
• Anterior cerebral artery
• Superior cerebellar artery
• Anterior spinal artery

Q7. Which arteries arising from the vertebral arteries contribute to posterior spinal cord supply?

• Callosomarginal arteries
• Posterior spinal arteries
• Lenticulostriate arteries
• Thalamogeniculate arteries

Q8. Which portion of the cerebellum is strongly associated with PICA supply?

• Anterior temporal pole
• Medial occipital cortex
• Inferior cerebellar surface
• Superior frontal cortex

Q9. Where do the vertebral arteries normally unite?

• Within the cavernous sinus
• At the optic chiasm
• At the anterior communicating artery
• Near the pontomedullary junction

Q10. Which meningeal relationship applies to the V4 segment?

• It is intradural within the subarachnoid space
• It courses within the epidural space to the basilar artery
• It remains outside the dura throughout
• It lies inside a dural venous sinus