Natural casting in SOMSO-Plast, consisting of base of skull, mandible and cervical vertebrae with nerves. Representation of cervical arteries with internal passage through the base of skull with emphasis on basilar artery with complete circle of Willisi. In one piece. Movable on stand with base. Height: 26 cm., width: 18 cm., depth: 21 cm., weight: 1.2 kg.