How to pronounce“subventricular”in English

Well, there's a little subventricular zone, there's a little zone below, sub ventricles.

stem cells in the adult that are still present in the adult brain in the subventricular zone here in Orange and in the dent jarus of the hippocampus

And when they die, they're replaced by new ones that come from a different region of the brain, a region called the subventricular zone.