Answer
The ventricles of the brain are its four internal chambers. They include the two lateral ventricles, the third ventricle and the fourth ventricle. The lateral ventricles ,which are the most rostral chambers, are arched structures-- one in each cerebral hemisphere. Inferior to the corpus callosum (CC), is a narrow median space ; this is the third ventricle. Each lateral ventricle connects with the third ventricle by a narrow aperture called an interventricular foramen.
From the third ventricle the cerebral aqueduct pases down the center of the midbrain to reach the fourth ventricle. which is a small chamber between the pons and the cerebellum. Inferior to the fourth ventricle, the cavity narrows to form a central canal that passes through the medulla oblongata to the spinal cord.
Work Step by Step
The CSF flows from the fourth ventricle into the central canal. It also passes from the fourth ventricle through three small apertures ( two lateral and one central) into the subarachnoid cisterns. CSF acts as a cushion that protects the brain, physically; in addition, it supplies the brain with nutrients and oxygen; it also, simultaneously, removes carbon dioxide and metabolic wastes.
