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Questions and Answers
What is the function of the ossicles in the middle ear?
What is the function of the ossicles in the middle ear?
- To equalize air pressure on both sides of the eardrum
- To amplify vibrations and transmit them to the fluid of the inner ear (correct)
- To communicate with the nasopharynx via the eustachian tube
- To prevent damage to the inner ear from loud sounds
What is the function of the eustachian tube?
What is the function of the eustachian tube?
- To prevent damage to the inner ear from loud sounds
- To amplify vibrations in the middle ear
- To communicate with the nasopharynx
- To allow air pressure to be equalized on both sides of the eardrum (correct)
Which of the following is NOT a component of the external ear?
Which of the following is NOT a component of the external ear?
- Pinna
- Inner ear (correct)
- Tympanic membrane
- External auditory meatus
Which part of the ear includes the pinna and external auditory meatus?
Which part of the ear includes the pinna and external auditory meatus?
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What are the three components of the ear?
What are the three components of the ear?
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What is the function of the eustachian tube?
What is the function of the eustachian tube?
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What are the three ossicles in the middle ear?
What are the three ossicles in the middle ear?
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What are the three ossicles found in the middle ear?
What are the three ossicles found in the middle ear?
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What is the function of the eustachian tube?
What is the function of the eustachian tube?
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Study Notes
- Each ear has 3 components: external, middle, and inner ear.
- External ear includes pinna and external auditory meatus.
- Sound waves travel through external auditory canal and cause eardrum to vibrate.
- Vibrations of eardrum cause ossicles in middle ear to vibrate.
- Ossicles amplify vibrations and transmit them to fluid of inner ear.
- Middle ear has 3 ossicles: malleus, incus, and stapes.
- Two small skeletal muscles prevent damage to inner ear from loud sounds.
- Middle-ear cavity communicates with nasopharynx via eustachian tube.
- Eustachian tube allows air pressure to be equalized on both sides of eardrum.
- Inner ear is fluid-filled space.
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