Ear anatomy is examined in 3 main parts.
Auricle and external auditory canal
Middle ear (tympanic membrane, middle ear cavity, eustachian tube)
Inner ear (organ of hearing and balance)
Auricle: It consists of skin and cartilage. It allows the sound to be directed to the external ear canal
External Ear Canal: is approximately 2.5 cm long. The outer 1/3 consists of cartilage and the inner 2/3 consists of bone.
Eardrum: It is a structure with a diameter of approximately 1 cm that separates the middle ear from the outer ear.
Middle Ear Cavity: inside the middle ear cavity. There are hammer, anvil and stirrup bones. The middle ear is ventilated through the eustachian tube.
Eustachian tube: It is a structure approximately 3.5 cm long, located between the middle ear cavity and the nasal cavity.
Balance organ: consists of semicircular canals and vestibule.
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Hearing organ: It is a spiral-shaped structure that makes approximately 2.5 turns.
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