Anterior and Posterior Interventricular Sulcus. Sulcus meaning "groove" .
The interventricular septum is the medial partition between the lateral ventricles. It separates the oxygenated and deoxygenated blood.
The function of the septum pellucidum is to cover and seperate the lateral ventricles. And by covering these ventricles it can also help keeping in the cerebrospinal fluid produced by the choroid plexus within those ventricles.
lateral ventricle
The foramen of Monro connect the lateral ventricles with the third ventricle.
the septum pellucidum
triceps
Atrioventricular septum
the interventricular sulcus is the groove that separates the ventricles
There is not a valve between the ventricles. The interventricular septum separates them.
lateral ventricle, third ventricles, fourth ventricles, and cerebral aqueduct
septum
the diaphragm