Beginner Cerebral Aqueduct Quiz

Q1. What does the cerebral aqueduct connect?

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

• Lymph
• Arterial blood
• Cerebrospinal fluid
• Venous blood

Q4. Which structure surrounds the cerebral aqueduct?

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

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

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

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

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

Q7. What type of cells line the cerebral aqueduct?

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

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

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

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

• From the subarachnoid space into the third ventricle
• From the third ventricle to the fourth 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?

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