Drawing of the inside of the brain showing the lateral ventricle, third ventricle, fourth ventricle, and the passageways between the ventricles (with cerebrospinal fluid shown in blue). Other parts of the brain shown include the cerebrum, cerebellum, spinal cord, and brain stem (pons and medulla).
Anatomy of the inside of the brain showing the lateral ventricle, third ventricle, fourth ventricle, and the passageways between the ventricles (with cerebrospinal fluid shown in blue). Other parts of the brain shown include the cerebrum, cerebellum, spinal cord, and brain stem (pons and medulla).