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Parts of the Ear

Anatomical components of the ear

QuestionAnswer
Pinna (Auricle) Cavity which ends at the tympanic membrane. It collects sound waves and channels them through the External Auditory Meatus.
Tympanic Membrane (Ear Drum) Found within the middle ear, or tympanic cavity, and is made up of dense connective tissue. It vibrates when hit by sound waves, and passes vibrations to the auditory ossicles.
External Auditory Meatus Canal which channels sound waves to the typanic membrane.
Cerumeniferous Exocrine glands which secrete cerumen (earwax) which traps microorganisms.
Tympanic Cavity Air filled typanic cavity in the temporal lobe.
Oval Window Windows that separate the middle ear from the inner ear.
Eustacian Tube Connects the middle ear to the pharynx (throat).
Auditory Ossicles The bones of the middle ear, which include the malleus (hammer), incus (anvil), and stapes (stirrup).
Malleus (Hammer) Passes on vibrations from the typanic membrane (eardrum) to the incus (anvil).
Incus (Anvil) Receives vibrations from malleus (hammer) and transmits the to the stapes (stirrup).
Stapes (Stirrup) Receives vibrations from incus (anvil) and transmits them to the oval window.
Labyrinth Also known as the inner ear.
Osseous Labyrinth Bony canal in the temporal lobe.
Membranous Labyrinth A tube which lies within the osseous labyrinth and has a similar shape. It contains the fluid endolymph
Perilymph Fluid in between the osseous labyrinth and the membranous labyrinth.
Vestibule Contains prorioreceptors for static equilibrium.
Semi-Circular Canal Contains prorioreceptors for dynamic equilibrium.
Cochlea Contains Organ of Corti which houses the auditory epithelium.
Created by: mkowalski