Quiz - 33 - Diving Knowledge Workbook - Diving Physiology

[Pedro Burrito]

From the Diving Physiology Section of the PADI Diving Knowledge Workbook Version 2.02 © PADI 2009:

Objective 2.13 - Describe the basic anatomy of the ear and which areas/structures are most affected by changing pressures.

Question 3

Which portion of the ear is most affected by changes in pressure?

a. outer ear

b. middle ear

c. inner ear

d. All areas are equally affected.​

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[Ukmc]

I love these ear physiology and anatomy questions

 

[TMHeimer]

I love these ear physiology and anatomy questions

Me too. Pretty cut and dry, right or wrong.

 

[Pedro Burrito]

Spoiler: Answer

b. middle ear

The outer ear structures (canal, lobes) are open to the water, and are unaffected by changes in ambient pressure. Like any air-filled structure of the body, the middle ear is affected by changes in ambient pressure. Although what occurs in the middle ear can, in turn, affect the inner ear, the inner ear itself is not directly affected by the change in ambient pressure because it is fluid-filled.