The most important structure in the lower respiratory tract is the alveolus.
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Q69: All of the turbinates are processes of
Q70: There are almost 30 million alveoli in
Q71: The larynx lies ventral to the third,fourth,and
Q72: Both the thyroid gland and the carotid
Q73: The respiratory tract does not include a
Q75: The trachea is slightly shorter than the
Q76: Both intrinsic and extrinsic muscles of the
Q77: There are nine openings in the pharynx.
Q78: The laryngopharynx ends at the esophagus.
Q79: Unlike the trachea,parts of the primary bronchi
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