This model shows the falx cerebri of the brain. It includes the ostia of bridging veins, lacuna with arachnoid granulations, the superior and inferior sagittal sinus, and the straight sinus. It fits with our skull models ref.no. 4500, 4505, 4508, 4509, 4512, 4514, 4701 and 4708 and brain models ref.no. C922 and C918.