Canadian Medical Guide > Anatomy > Nervous System > Central Nervous System > Brain > Cerebral Ventricles > Fourth Ventricle Terms and Definitions

Fourth Ventricle

Medical Definition:	An irregularly shaped cavity in the rhombencephalon, between the medulla oblongata, the pons, and the isthmus in front, and the cerebellum behind. It is continuous with the central canal of the cord below and with the CEREBRAL AQUEDUCT above, and through its lateral and median apertures it communicates with the subarachnoid space.
Guide Notes:	/radiogr: coord with CEREBRAL VENTRICULOGRAPHY
Previously Indexed:	Cerebral Ventricles (1965-1999)

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