👉 Intraventricular is a medical term used to describe a space within the brain that contains cerebrospinal fluid (CSF). This space is located between the ventricles of the brain and the meninges, which are the outer layer of the skull. Intraventricular CSF plays an important role in regulating blood flow and maintaining homeostasis in the brain. Intraventricular CSF contains a variety of substances that regulate brain function, including hormones, neurotransmitters