Portraying the base of the human head, this life-size nonbreakable replica features a detailed brain, complete with arterial blood vessels, including the basilar artery and Circle of Willis, cranial nerves, and dissectible brain stem. The entire brain can be lifted from the cranial vault and separated in seven parts. The right cerebral hemisphere divides along its length following the border of the corpus callosum, while the left can be split to expose the posterior horn of the lateral ventricle and hippocampus. Dissections of the cranial floor expose the eyeball, its muscles, lacrimal gland, optic nerve, and the middle and inner ear. 107 hand numbered features are identified in the accompanying key. Autographed Anatomy Models: The only models in the world which are personally autographed and dated by their handcrafter! ¥ 100% American-made, every step in the production of every Autographed Anatomy model – molding, hand sanding, hand painting, number-coding, labeling and autographing – is carried out here in our DGi Skokie factory. ¥ Quality is unsurpassed. ¥ Delivery is from stock. ¥ And should you ever have the need, replacement parts, repairs and refurbishing of your Autographed Anatomy model are just a toll-free phone call away. And every Autographed Anatomy model carries our Lifetime Guarantee of Satisfaction – We will repair or replace any component of any Autographed Anatomy model which proves defective due to our workmanship, for as long as you own the model – no charge, of course. Overall dimensions: 8x9x6 inches (17x22x15cm).