Quiz-Tree
Question 1
The visible, outer part of the ear is called the ___.
The pinna (also called the auricle) is the curved flap of cartilage and skin on the side of the head. Its shape helps collect sound and funnel it into the ear canal.
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Answer question 1 to unlock
Which part of the ear is filled with fluid?
The outer and middle ear are filled with air. The inner ear, including the cochlea and the semicircular canals, is filled with fluid.
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Answer question 2 to unlock
What is the smallest bone in the human body?
The stapes, or stirrup, is about 3 millimeters long. It is the last bone in the chain of ossicles.
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Answer question 3 to unlock
The three tiny bones of the middle ear are called the ___.
The ossicles are the malleus, incus and stapes. They form a chain that carries vibrations from the eardrum to the inner ear.
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Answer question 4 to unlock
Which structure separates the outer ear from the middle ear?
The eardrum, or tympanic membrane, is a thin membrane at the end of the ear canal. It vibrates when sound waves hit it.
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Answer question 5 to unlock
Which tube connects the middle ear to the back of the throat?
The Eustachian tube lets air in and out of the middle ear so the pressure on both sides of the eardrum stays equal. Yawning or swallowing opens it, which is why your ears "pop."
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Answer question 6 to unlock
Which ossicle is attached to the eardrum?
The malleus, or hammer, is connected directly to the eardrum. It passes vibrations on to the incus and then the stapes.
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Answer question 7 to unlock
The semicircular canals of the inner ear help you ___.
The three fluid-filled semicircular canals sense head movement and rotation. They are part of the vestibular system, which controls balance.
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Answer question 8 to unlock
The incus is also known as the ___.
The three ossicles are nicknamed for their shapes: the hammer (malleus), the anvil (incus) and the stirrup (stapes).
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Answer question 9 to unlock
The stapes passes vibrations into the inner ear through the ___.
The footplate of the stapes sits in the oval window, a small opening into the cochlea. The round window, just below it, bulges out to let the fluid move.
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Answer question 10 to unlock
The snail-shaped organ of hearing in the inner ear is the ___.
The cochlea is a coiled, fluid-filled tube. Its name comes from the Greek word for snail.
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Answer question 11 to unlock
Glands in the ear canal produce ___, which traps dust and germs.
Earwax, or cerumen, cleans and protects the ear canal. It slowly moves outward on its own.
correct answers
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