An audiogram is the chart used to record the results of a hearing test. Pitch is shown on the horizontal “x” axis and loudness on the vertical “y” axis.


A healthcare professional who knows how to prevent, identify, and treat hearing problems.

Auditory Canal

Part of the outer ear; also known as the ear canal. Sound travels through the tube-like canal and then makes the eardrum vibrate.

Auditory Nerve

A bundle of special hearing cells that connect the ear to the brain.


The snail shell-shaped organ of hearing located in the inner ear. Inside the cochlea are about 36,000 special sensory cells called cilia.

Decibels (dB)

The unit used to measure the volume or loudness of sound; named after Alexander Graham Bell.


The part of the ear that separates the middle ear from the outer ear; also known as the tympanic membrane. It is very thin and sound waves make it vibrate.

Eustachian Tube

The tube that connects the middle ear to a space behind the nose. Delete? Never mentioned

Hertz (Hz)

The unit used to measure the pitch of sound.

Middle Ear Bones

The three bones in your middle ear called the malleus, incus, and stapes; also known as the hammer, anvil, and stirrup because of their shapes. They are the three smallest bones in your body.

Noise-Induced Hearing Loss (NIHL)

A hearing problem caused by a loud sound or loud sounds over time. NIHL is permanent and cannot be repaired by a doctor.


The outer part of your ear that the world can see; also known as the auricle. The pinna collects sound waves and funnels them down into the ear canal.


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