Physiology of Hearing

The pinna, also known as the auricle, is the visible part of the ear that collects sound waves and directs them into the ear canal.

The eardrum, also known as the tympanic membrane, vibrates when sound waves hit it, transmitting these vibrations to the ossicles.

The lenticular process is not one of the ossicles. The ossicles are three small bones in the middle ear that transmit sound vibrations from the eardrum to the inner ear.

The oval window is a membrane-covered opening in the inner ear that allows sound vibrations to be transmitted from the ossicles to the cochlea.

The organ of Corti, located within the cochlea, contains hair cells that convert sound vibrations into electrical signals.

The base of the cochlea is responsible for high-frequency sounds, while the apex is responsible for low-frequency sounds.

The auditory nerve transmits electrical signals from the cochlea to the brain, where they are interpreted as sound.

The temporal lobe, particularly the primary auditory cortex, is responsible for processing auditory information.

Masking is the phenomenon in which the presence of one sound makes it difficult or impossible to hear another sound.

Presbycusis is not a type of hearing loss, but rather a term used to describe the gradual loss of hearing that occurs with age.

Earwax buildup is the most common cause of conductive hearing loss.

Difficulty hearing high-pitched sounds is a common symptom of sensorineural hearing loss.

Tinnitus is the perception of sound in the absence of an external sound source.

Surgery is a common treatment option for conductive hearing loss, depending on the underlying cause.

Sound localization is the ability to determine the direction of a sound source.