This ear model is dissectible into four parts. The detachable petrous portion of the temporal bone reveals the middle and inner ear chambers. Also removable is the tympanic membrane with the mallieus incus and attached stapes. The external ear is represented by the auricle and auditory canal. Mounted on a sturdy base, it comes with a detailed key. With unprecedented quality and attention to detail, this model is excellent for use in science projects, as a anatomy demonstration model, and more.