The trachea and upper bronchial tree are similar in that both are held open by cartilaginous rings.
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Q23: When the glottis becomes narrower,
A) the pitch
Q24: The right lung is larger than the
Q25: What separates the lungs from the thoracic
Q26: Sound is produced when air rushes into
Q27: The pharynx contains the tonsils,which protect against
Q29: Which part of the lower respiratory tract
Q30: Why is the actual flow of air
Q31: Which of the following is not a
Q32: The epiglottis is the slit between the
Q33: The amount of air that moves in
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