Lab Ex 9 Ear Practical Review (Label Parts)

Front

What is the Eustachian Tube?

Back

A tube that connects the middle ear to the nasopharynx, helping to equalize pressure in the ear.

Front

What is the cochlea?

Back

A spiral-shaped, fluid-filled structure in the inner ear responsible for converting sound vibrations into neural signals.

Front

What is the pinna (auricle)?

Back

The visible part of the ear that collects sound waves and directs them into the ear canal.

Front

What are the ossicles?

Back

Three tiny bones in the middle ear (malleus, incus, stapes) that transmit sound vibrations from the eardrum to the inner ear.

Front

What is the function of the external auditory canal?

Back

A tube that carries sound waves from the outer ear to the eardrum.

Front

What is the bony labyrinth?

Back

A complex system of passages in the inner ear that contains the cochlea, vestibule, and semicircular canals.

Front

What is the membranous labyrinth?

Back

A series of fluid-filled sacs and ducts within the bony labyrinth that contains the sensory organs for hearing and balance.

Front

What is the role of the anvil (incus)?

Back

One of the ossicles that transmits sound vibrations from the malleus to the stapes.

Front

What is the stirrup (stapes)?

Back

The smallest bone in the human body, it transmits sound vibrations from the incus to the oval window of the cochlea.

Front

What is the function of the vestibule?

Back

A part of the inner ear that helps with balance and spatial orientation.