When the glottis becomes narrower,
A) the pitch of sound goes up.
B) the pitch of sound goes down.
C) all sound ceases completely.
D) the volume of sound increases.
E) the volume of sound decreases.
Correct Answer:
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Q18: Which part of the respiratory system is
Q19: The role of the respiratory system is
Q20: The respiratory system is responsible for
A) oxygen
Q21: Muscle contraction is required for expiration.
Q22: Which of the following is not part
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
Q28: The trachea and upper bronchial tree are
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