Ventricular system : Brain 101 for the Brainrotted #neuroscience

Added: 2026-05-05

[00:00:00]Is this a demon? What I'm holding right now is a model of our ventricular system. It's a part of a larger system called the cerebrospinal fluid system.

[00:00:09]Your brain produces about 500 ml of cerebrospinal fluid each day. It's produced inside of the ventricles by a structure known as the choroid plexus.

[00:00:16]From there, it flows around the brain and then down the spinal cord. It provides [music] buoyancy to the brain and reduces its effective weight from 1.5 kg to a mere 50 g. [music] It also stabilizes the extracellular environment by washing away waste products, including beta amyloid and tau proteins that can accumulate in Alzheimer's disease. The cerebrospinal fluid system can be divided into two spaces. [music] The outer liquor space covers the entire brain and consists of the subarachnoid space, while the inner liquor space is just the ventricular system itself.