Main Points of Ear

These flashcards cover key vocabulary related to the anatomy and physiology of the ear, sound perception, and hearing loss.

Auricle

The outer part of the ear that collects sound waves.

External Acoustic Meatus

The ear canal that directs sound waves to the tympanic membrane.

Tympanic Membrane

A membrane that separates the outer ear from the middle ear and transmits sound.

Ossicles

The three small bones in the middle ear that amplify sound waves.

Pharyngotympanic Tube

A tube that connects the middle ear to the nasopharynx.

Bony Labyrinth

The rigid, bony outer wall of the inner ear, containing perilymph.

Membranous Labyrinth

A system of fluid-filled ducts and sacs within the bony labyrinth.

Perilymph

The fluid contained within the bony labyrinth.

Endolymph

The fluid found within the membranous labyrinth.

Cochlea

A spiral structure in the inner ear that houses the organ of hearing.

Hair Cells

Sensory receptors in the cochlea that detect sound vibrations.

Stereocilia

Hair-like projections on hair cells that help transduce sound waves.

Basilar Membrane

A membrane in the cochlea that vibrates in response to sound.

Frequency

The number of sound waves per second, perceived as pitch.

Amplitude

The height of sound waves, which reflects sound intensity.

Tinnitus

A ringing or buzzing in the ears often associated with hearing loss.

Conduction Deafness

Hearing loss due to interference with sound conduction to the inner ear.

Sensorineural Deafness

Hearing loss due to damage to the inner ear or auditory pathways.

Vestibular Apparatus

The system in the inner ear responsible for maintaining balance.