L’anatomie de l’oreille

Which of the following structures is primarily responsible for preventing foreign bodies from entering the ear?

The Eustachian tube connects the inner ear directly to the nasal cavity.

What is the primary function of the vibrating cilia located within the cochlea?

The three __________ are fluid-filled structures that contribute to the sense of balance.

Match the following ear structures with their primary function:

Ears are the organs containing sensory receptors for hearing and contribute to balance.

Anatomy of the Ear

Pavilion: The only visible part of the ear shaped like a funnel.
Auditory canal: A canal approximately 2.5 cm long, lined with hairs and glands that secrete sebum, preventing foreign bodies from entering the ear.
Eardrum: A thin, flexible, and fibrous membrane about 1 cm in diameter.
Ossicles: Small bones located in a cavity of the skull.
The three ossicles (hammer, anvil, and stirrup) can move relative to one another.
Eustachian tube: A canal connecting the middle ear to the pharynx (throat).
Vestibule: An organ connecting the semicircular canals to the cochlea and is linked to the balance nerve.
Cochlea: (or snail) Organ filled with liquid, its walls are lined with vibrating cilia, and encloses auditory nerve cells connected to the auditory nerve.
Auditory nerve: Formed from the axons of the auditory cells of the cochlea.
Semicircular canals: These three canals form a labyrinth filled with liquid and connect to the balance nerve.

Test your knowledge about the anatomy of the human ear. This quiz contains questions about the function of the different parts of the ear, including the cochlea and the Eustachian tube. The questions cover the function of vibrating cilia and related topics.