| Deluxe Eight-Part Ear 5 times life-size in unbreakable vinyl, our most detailed ear model provides a more complete perspective of the middle and inner ear structures within the temporal bone. All the skin has been peeled off the detachable auricle to expose its cartilaginous structure, muscles, auricular arteries and nerves, as well as the entrance to the auditory canal. Sections of the petrous and mastoid portions of the temporal bone can be lifted off to expose the middle and inner ear chambers. The tympanic ring with its see-through tympanic membrane and attached ossicles can also be lifted out. The extractable labyrinth is dissectible into three portions. Half of it, consisting of the semicircular canals and vestibule, demonstrates the sense of balance. Transparent tubing with colored liquid represents two of the semicircular canals. An air bubble in each will move when tipped, demonstrating the canals? function in equilibrium. The other half of the labyrinth, upon removal, shows the vestibular and cochlear nerves, which join to form the auditory nerve. The cochlea itself separates into halves to reveal cochlear, vestibular and tympanic ducts and the branching of the cochlear nerve. 95 hand-numbered features are identified in the corresponding key. Overall dimensions: 17x11x8 inches (43x28x20 cm) overall. 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- 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. |
