Full size normal model shows semi- circular canals and cochlea of the inner ear, auditory ossicles from the middle ear, tympanic membrane and temporal and tympani muscles. Ear anatomy model size: 3-3/4" x 2-1/2" x 2-3/4" Card size: 6-1/2" x 5-1/4" 5" x 6" x 1" White Base included with every model. Made of durable high quality materials.