BIOL 1162 - The Special Senses (Ear)

Auricle

Shell-shaped structure surrounding ear canal that functions to funnel sound waves into the auditory canal.

External acoustic meatus (auditory canal)

Short curved tube line with skin bearing hairs, sebaceous glands, and ceruminous (earwax) glands that transmit sound waves to the tympanic membrane (eardrum)

Pharyngotympanic (auditory) tube

Connect middle ear to Nasopharynx

Auditorium ossicles

Three small bones (Malleus, Incas, and stapes) in the Timpanic cavity named for the shape

Bony labyrinth

System of tortuous channels and cavities (divided into vestibule, semicircular canals, and cochlea) that worm through the bone; filled with perilymph

Membranous labyrinth

Series of membranous sacs and ducts contained in the bony labyrinth; filled with potassium-rich endolymph