Question

Question #3

PartA

Why do people often chew gum to maintain their hearing and minimize physical discomfort during an airplane takeoff?

PartB

Briefly describe what the acoustic reflex is and what purpose it serves. Be sure to name any relevant structures?

PartC

If a spot of light is shown is it possible to perceive whether one is viewing a single wavelength of light as opposed to multiple wavelengths superimposed on the same location? Explain why or why not?

Answer 1

The Eustachian tube in the inner ear connects the middle ear with the outside environment, however, changes in cabin pressure creates an inequality with the pressure in your middle ear. The changes are usually experienced as the plane takes off or comes in to land. The inequality in pressure places stress on the inner ear resulting in discomfort and even pain. Chewing gum can help counter the inequality in the pressure. The chewing motions encourage the production of saliva and therefore swallowing. The act of swallowing forces the Eustachian tube to open its internal exit at the nasal cavity. This, in turn, makes the ears pop.

Please post the other questions separately as we are supposed to answer just one question or four sub parts of a single question.