Flow of CSF in the brain

Cerebrospinal fluid is produced by modified ependymal cells in the choroid plexus present in almost all components of the ventricular system

This is the order of flow in the brain:

1. Ventricle: Right lateral ventricle and Left lateral ventricle
2. Passage: Interventricular foramen (Foramen of Monro)
3. Ventricle: Third ventricle
4. Passage: Cerebral aqueduct (Aqueduct of Sylvius)
5. Ventricle: Fourth ventricle
6. Passage: 2x Foramen of Luschka (Lateral apertures) and 1x Foramen of Magendie (Medial aperture)
7. Spinal cord: Subarachnoid space of the spinal cord
8. Passage: Arachnoid granulations or Lymphatics
9. Circulation: Venous sinuses or Lymphatics