The middle ear chamber is an air-filled “hole in the head”, which is adapted to allow free movement of the tympanum as it vibrates. Unless the pressure in the chamber is equal to atmospheric pressure outside, the tympanum will be stretched outward or inward, impeding its vibration and causing discomfort or pain. When moving up in the elevator of a tall building, the surrounding atmospheric pressure is: a) increasing causing air to enter the middle ear chamber through the Eustachian tube. B.) increasing causing air to enter the middle ear chamber through the auditory canal C.)decreasing causing air to leave the middle chamber through the Eustachian tube D.) decrea
1.) The middle ear chamber is an air-filled “hole in the head”, which is adapted to allow free movement of the tympanum as it vibrates. Unless the pressure in the chamber is equal to atmospheric pressure outside, the tympanum will be stretched outward or inward, impeding its vibration and causing discomfort or pain. When moving up in the elevator of a tall building, the surrounding atmospheric pressure is:
a) increasing causing air to enter the middle ear chamber through the Eustachian tube.
B.) increasing causing air to enter the middle ear chamber through the auditory canal
C.)decreasing causing air to leave the middle chamber through the Eustachian tube
D.) decreasing causing air to leave the middle ear chamber through the auditory canal
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