A hole in the eardrum.

See Tympanic Membrane.

The inch-long pathway leading from the outer ear to the eardrum. The ear canal produces cerumen (ear wax) and contains hairs that prevent bacteria and foreign objects from reaching the eardrum.

A small transducer (earphone) that is inserted into the ear canal. Like earphones, earbuds deliver sound to the ear, but for some, they are more comfortable that earphones.

See Electrical Auditory Brainstem Response testing.

See Auditory Neuropathy Spectrum Disorder.