The Ventricular System

What does the Ventricular System forms?

the “inside” of the Cerebrum

Ventricular System

a series of fluid-filled cavities in the CNS

What is Cerebral Spinal Fluid (CSF) produced by?

the choroid plexus within the ventricles

What best describes the function of CSF in the ventricles?

flows through the ventricles,

is filtered from blood plasma,

delivers nutrients to the brain,

& carries waste away

How does the Ventricular System contribute to Brain?

It allows the brain to “float” in the skull

How many structures are in the Ventricular System?

8

Lateral Ventricles

2 C-Shaped Lateral Ventricles

What does each Lateral Ventricles have? 

Anterior, Posteror, & Inferior Horn. 

Interventricular foramen 

Is opening that connects the Lateral & Third ventricles 

Third Ventricle

Midline structure bordered by the Thalamus & Hypothalamus

Cerebral Aqueduct

Midline structure that connects the Third & Fourth ventricles

Aqueduct means… 

passageway for fluid 

Fourth Ventricle 

Midline Structure that lies anterior to the Cerebellum 

Lateral Apertures

CSF flows through the two lateral apertures 

Apertures means…

Opening

Median Apertures

CSF flows through the medial aperture

Central Canal 

Midline structure and located throughout the Spinal Cord 

CSF is mainly produced in the…..

Lateral Ventricles

Where does the Flow of CSF starts?

Interventricular Foramen to the Third Ventricle

Where does the Flow of CSF next? 

From the Third Ventricle to flow through the Cerebral Aqueduct to the Fourth Ventricle 

Where does the Flow of CSF exits?

Exit through the Two Lateral Apertures, the Medial Aperture, or the Central Canal

What does grey/bold color words correlate to the Flow of CSF? 

Ventricle 

What does blue color words correlate to the Flow of CSF? 

a hole/passageway