Beginner Fourth Ventricle Quiz

Q1. Where is the fourth ventricle located?

• Between the pons and upper medulla anteriorly and the cerebellum posteriorly
• Within the diencephalon
• Between the two cerebral hemispheres
• Inside the temporal lobe

Q2. Which channel carries cerebrospinal fluid into the fourth ventricle from the third ventricle?

• Central canal
• Median aperture
• Cerebral aqueduct
• Interventricular foramen

Q3. What is the floor of the fourth ventricle called?

• Suprasellar cistern
• Interpeduncular fossa
• Posterior perforated substance
• Rhomboid fossa

Q4. Which structures form the floor of the fourth ventricle?

• Corpus callosum and fornix
• Thalamus and hypothalamus
• Cerebral hemispheres
• Dorsal pons and open medulla

Q5. Which structure lies posterior to the fourth ventricle?

• Pituitary gland
• Optic chiasm
• Caudate nucleus
• Cerebellum

Q6. Through which opening does CSF leave the fourth ventricle in the midline?

• Optic recess
• Median aperture
• Cerebral aqueduct
• Interventricular foramen

Q7. What are the paired lateral openings of the fourth ventricle called?

• Optic foramina
• Lateral apertures
• Interventricular foramina
• Jugular foramina

Q8. Which structure produces most of the CSF associated with the fourth ventricle?

• Medial eminence
• Median sulcus
• Choroid plexus
• Facial colliculus

Q9. What does the fourth ventricle become inferiorly near the closed medulla?

• Lateral ventricle
• Central canal
• Cerebral aqueduct
• Cavernous sinus

Q10. What is the normal destination of most CSF leaving the fourth ventricular apertures?

• Cavernous sinus directly
• Epidural space
• Subarachnoid space
• Subdural space