Fourth Membrane Discovered in the Brain: What It Means

Scientists just discovered a secret fourth membrane in the human brain. Here

And Then There Were Four: A New Meningeal Membrane Discovered

Meninges, Ventricles, CSF and brain blood supply

14.3 The Brain and Spinal Cord – Anatomy & Physiology

Ventricular system - Wikipedia

Human brain - Wikipedia

Pia mater - Wikipedia

Choroid Plexus - The Definitive Guide

2-Minute Neuroscience: The Ventricles

We've just discovered a new part of the brain's waste disposal system