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

Cerebral Ventricles

Medical Definition:
Guide Notes:	ventriculitis: coord IM with ENCEPHALITIS (IM)
Also Called:	Foramen of Monro

Cerebral Ventricles Categories.

	Choroid Plexus - A villous structure of tangled masses of BLOOD VESSELS contained within the third, lateral, and fourth ventricles of the BRAIN. It regulates part of the production and composition of CEREBROSPINAL FLUID.
	Ependyma - A thin membrane that lines the ventricles of the brain and the central canal of the SPINAL CORD.
	Fourth Ventricle - 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.
	Lateral Ventricles - Cavity in each of the cerebral hemispheres derived from the cavity of the embryonic neural tube. They are separated from each other by the SEPTUM PELLUCIDUM, and each communicates with the THIRD VENTRICLE by the foramen of Monro, through which also the choroid plexuses (CHOROID PLEXUS) of the lateral ventricles become continuous with that of the third ventricle.
	Septum Pellucidum - A triangular double membrane separating the anterior horns of the lateral ventricles of the brain. It is situated in the median plane and bounded by the corpus callosum and the body and columns of the fornix.
	Third Ventricle - A narrow cleft inferior to the corpus callosum, within the diencephalon, between the paired thalami. Its floor is formed by the HYPOTHALAMUS, its anterior wall by the lamina terminalis, and its roof by EPENDYMA. It communicates with the FOURTH VENTRICLE by the CEREBRAL AQUEDUCT, and with the LATERAL VENTRICLES by the interventricular foramina.

Cerebral Ventricles Medical Definitions and Terms

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