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Anatomy and Physiology of the Ear Assessment

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Anatomy and Physiology of the Ear Assessment

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Questions and Answers

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?

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?

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?

Secreting a brown, waxlike substance called cerumen Signup and view all the answers

Where does the external auditory canal end?

At the tympanic membrane Signup and view all the answers

What is the main function of the eustachian tube?

Equalize pressure between the middle ear and the atmosphere Signup and view all the answers

Which part of the tympanic membrane is more susceptible to pathologic disorders?

Pars flaccida Signup and view all the answers

What is the main role of the tympanic membrane?

Protect the middle ear and conduct sound vibrations Signup and view all the answers

Which muscle is responsible for opening the eustachian tube during actions like yawning or swallowing?

Tensor veli palatini muscle Signup and view all the answers

How many layers make up approximately 80% of the tympanic membrane?

3 layers Signup and view all the answers