"Choroid plexus locations: found in the roof of the 3rd and 4th ventricles and next to the central part and inferior horns of the lateral ventricles. (The choroid plexus is enlarged at the junction between inferior horn and central part; here it is called the choroid glomus). None is found in the anterior or posterior horns. The plexus in the lateral ventricle is the largest and most important and is continuous with that of the 3rd ventricle above the interventricular foramina. The lateral openings of the 4th ventricle (foramina of Luschka) also contain choroid plexus which protrude through them and secrete CSF into the subarachnoid space."
