The Human Functional Ear Anatomy Model is an anatomy model from 3B Scientific and manufactured in Germany. This functional ear model shows how the tympanic membrane, ossicles, the complex internal ear with the cochlea and the oscillations of the basilar hearing membrane operate/interact. The enclosed mirror enables operation of the functional ear model for the studying of various ear-functions from different angles at the same time. One single ear model may be studied by several students simultaneously in an action-oriented learning situation. Functional ear includes a four-color explanatory chart. Don't just teach the anatomy and function of the human ear, show it! The Human Functional Ear Anatomy Model weighs 2.20 lbs.