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?

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

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

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

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

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

Q5. Which structure lies posterior to the fourth ventricle?

• Caudate nucleus
• Cerebellum
• Optic chiasm
• Pituitary gland

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

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

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

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

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

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

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

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

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

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