1. The Ventricular System
faizan

2. Ventricles
Lateral Ventricles
Third Ventricle
Fourth Ventricle

3. Ventricles Ventricles are connected (communicate)
Intraventricular Foramina (of Monroe)
Lateral Ventricles to Third Ventricle
Wide, oval hole
Cerebral Aqueduct (of Sylvius)
Third Ventricle to Fourth
Long, thin channel
Foramen of Magendie
Median aperture -- Fourth ventricle to subarachnoid space
Foramina of Luschka
Lateral apertures -- Fourth ventricle to subarachnoid space

4. Ventricles Foramen of Monroe Aqueduct of Sylvius Foramina of Luschka
Foramen of Magendie

5. Ventricles

6. Ventricles

7. Choroid Plexus and CSF Choroid Plexus Produces CSF
Spongy tissue located in the ventricles
Rich capillary bed
Pia Mater
Choroid endothelial cells
Produces CSF
About .35 ml per minute
Total volume ml

8. Choroid Plexus

9. CSF Flow Lateral ventricles Foramina of Monroe 3rd ventricle
Aqueduct of Sylvius
4th Ventricle
Foramen of Magendie/foramina of Lushka
Subarachnoid Space
Arachnoid granulations (absorption)
Superior sagittal sinus

10. CSF Flow

11. CSF Absorption
CSF flows to the dorsal surface of the brain, where arachnoid granulations form a one-way valve and let the excess CSF enter the veinous drainage of the superior sagittal sinus

12. CSF Absorption

13. Arachnoid Granulations

14. Ventricular System plus Amygdala

15. Ventricular System plus Thalamus

16. Ventricular System plus Thalamus

17. Ventricles, Brainstem, and Thalamus