Beginner Cerebral Aqueduct Quiz

Q1. What does the cerebral aqueduct connect?

• Lateral ventricle to fourth ventricle
• Fourth ventricle directly to subarachnoid space
• Third ventricle to fourth ventricle
• Lateral ventricle to third ventricle

Q2. Through which part of the brain does the cerebral aqueduct pass?

• Frontal lobe
• Midbrain
• Cerebellum
• Medulla oblongata

Q3. What normally flows through the cerebral aqueduct?

• Cerebrospinal fluid
• Arterial blood
• Venous blood
• Lymph

Q4. Which structure surrounds the cerebral aqueduct?

• Caudate nucleus
• Internal capsule
• Corpus callosum
• Periaqueductal gray

Q5. Which ventricular cavity lies immediately upstream from the cerebral aqueduct?

• Central canal
• Third ventricle
• Fourth ventricle
• Anterior horn of the lateral ventricle

Q6. Which ventricular cavity receives CSF directly from the cerebral aqueduct?

• Fourth ventricle
• Subarachnoid space directly
• Third ventricle
• Lateral ventricle

Q7. What type of cells line the cerebral aqueduct?

• Schwann cells
• Pyramidal neurons
• Purkinje cells
• Ependymal cells

Q8. Why is the cerebral aqueduct particularly susceptible to causing obstructive hydrocephalus?

• It has a narrow lumen
• It is the widest ventricular cavity
• It normally has no CSF flow
• It contains multiple large venous sinuses

Q9. What is the usual direction of CSF flow through the cerebral aqueduct?

• From the third ventricle to the fourth ventricle
• From the subarachnoid space into the third ventricle
• From the lateral ventricles directly to the fourth ventricle
• From the fourth ventricle to the third ventricle

Q10. Which condition can result from blockage of the cerebral aqueduct?

• Peripheral neuropathy
• Subdural hygroma only
• Epidural hematoma by definition
• Obstructive hydrocephalus