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Questions and Answers
What is the main function of the auricle (pinna)?
What is the main function of the auricle (pinna)?
- Composing mainly of fat tissue
- Secreting ear wax
- Protecting the tympanic membrane
- Collecting sound waves and directing vibrations (correct)
Which part of the external ear is separated from the middle ear by the tympanic membrane?
Which part of the external ear is separated from the middle ear by the tympanic membrane?
- Cartilage in the earlobe
- External Auditory Canal (correct)
- Skin of the canal
- Auricle (Pinna)
What is the composition of the lateral third of the external auditory canal?
What is the composition of the lateral third of the external auditory canal?
- Fat and subcutaneous tissue
- Secreting cerumen
- Elastic cartilaginous and dense fibrous framework (correct)
- Mainly bone with thin skin lining
What is the role of ceruminous glands in the external ear?
What is the role of ceruminous glands in the external ear?
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Where does the external auditory canal end?
Where does the external auditory canal end?
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What is the main function of the eustachian tube?
What is the main function of the eustachian tube?
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Which part of the tympanic membrane is more susceptible to pathologic disorders?
Which part of the tympanic membrane is more susceptible to pathologic disorders?
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What is the main role of the tympanic membrane?
What is the main role of the tympanic membrane?
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Which muscle is responsible for opening the eustachian tube during actions like yawning or swallowing?
Which muscle is responsible for opening the eustachian tube during actions like yawning or swallowing?
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How many layers make up approximately 80% of the tympanic membrane?
How many layers make up approximately 80% of the tympanic membrane?
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