OTOLARYNGOLOGY - Anatomy of the Inner Ear Anatomy Poster for otolaryngologists depicts temporal bone and the structures of the ear, including mastoid portion, petrous portion and squamous portion. It also illustrates the right external ear, auditory ossicles, lateral aspect of right tympanic membrane, crista ampullaris, cochlea, organ of corti, the membaranous labyrinth and the macula of utricle.
One of the most noticeable variations in external ear anatomy is that of free lobes vs. attached lobes. This is a genetic trait. Although there's not 100% consensus, it's widely believed that attached earlobes are the recessive trait. If you have attached lobes, this means you most likely have two recessive alleles for it.