Ear Anatomy Overview

The fibrous layer of the eardrum composed of outer circular fibers.

The middle ear cavity connects to the throat through the Eustachian tube.

Muscles within the middle ear that control the movement of ossicles.

The smallest bone in the body, attached to the eardrum.

The Stapedius muscle helps to protect the inner ear from loud sounds.

Auditory ossicles are connected via synovial joints, allowing vibrations to be transmitted from the eardrum to the inner ear.

A channel in the cochlea that supports the hair cells responsible for hearing.

The cells forming the outermost border of the cochlea, contributing to fluid balance.

These cells in the cochlea support the hair cells, essential for hearing.

Inner hair cells are cylindrical and arranged in a single row, while outer hair cells are columnar and arranged in three rows.

The utricle and saccule are responsible for maintaining balance and equilibrium.

The basilar membrane conducts vibrations from the middle ear to the hair cells of the cochlea.

The ear is responsible for hearing, maintaining balance and equilibrium.

The inner ear contains fluid that activates receptors and converts them into nerve signals.

The outer ear collects sound waves and directs them towards the ear canal.

The external auditory canal is lined with a layer of skin.

The external auditory canal contains glands that produce earwax.

The middle layer of the eardrum is devoid of hair and varies in thickness.

The otolithic membrane plays a crucial role in interpreting equilibrium.

The hair cells in the utricle and saccule have a high number of stereocilia.

The semicircular canals are responsible for detecting rotational movements of the head.

The Cupula, a gelatinous structure, is located in the semicircular canals and helps to detect rotational head movement.

Type D hair cells are found specifically within the Crista ampullaris.

The gelatinous membrane covering hair cells in the utricle and saccule contains protein and calcium carbonate crystals.

The Eustachian tube balances air pressure in the middle ear.

The semicircular canals of the inner ear are responsible for the body's sense of equilibrium and balance.

Perilymph, a fluid high in sodium and low in potassium, fills the bony labyrinth of the inner ear.

The stria vascularis is responsible for maintaining the proper ion composition of the endolymph.

The cochlear duct divides the cochlea into three chambers.

The organ of Corti, located in the cochlea, is responsible for hearing.

Pillar cells form the lateral wall of the cochlear duct, contributing to its structure.