Beginner Circle of Willis Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. What is the Circle of Willis?
- A dural venous sinus around the pituitary gland
- A network of cerebral veins on the cortical surface
- A lymphatic ring surrounding the brainstem
- An arterial anastomotic ring at the base of the brain
Q2. Which artery connects the right and left anterior cerebral arteries?
- Posterior communicating artery
- Anterior communicating artery
- Middle cerebral artery
- Basilar artery
Q3. Which segment of each anterior cerebral artery forms part of the Circle of Willis?
- A2 segment
- M1 segment
- P2 segment
- A1 segment
Q4. Which part of the internal carotid artery contributes directly to the Circle of Willis?
- Cervical external carotid artery
- Middle meningeal artery
- Terminal intracranial internal carotid artery
- Common carotid bifurcation
Q5. Which arteries connect the internal carotid circulation with the posterior cerebral arteries?
- Posterior communicating arteries
- Anterior communicating arteries
- Superior cerebellar arteries
- Anterior spinal arteries
Q6. Which segment of the posterior cerebral artery contributes to the classic Circle of Willis?
- P2 segment
- A2 segment
- M2 segment
- P1 segment
Q7. Where is the Circle of Willis located?
- Inside the lateral ventricles
- Within the superior sagittal sinus
- Inside the cerebellar white matter
- At the base of the brain in the subarachnoid space
Q8. What is a major functional significance of the Circle of Willis?
- Draining venous blood
- Controlling pituitary hormone secretion
- Providing potential collateral cerebral blood flow
- Producing cerebrospinal fluid
Q9. Which major cerebral artery is not considered a component of the classic Circle of Willis?
- Posterior communicating artery
- Anterior communicating artery
- Middle cerebral artery
- A1 segment of the anterior cerebral artery
Q10. Which two broad circulations are connected through the Circle of Willis?
- External carotid and dural venous circulations
- Anterior and posterior cerebral circulations
- Arterial and venous circulations
- Pulmonary and systemic circulations