In internal respiration, the PCO2 in the blood is ____________________, and the PCO2 in the tissues is ____________________.
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Q180: Normal inflation of alveoli is possible because
Q181: In external respiration, the PO2 in the
Q182: In internal respiration, carbon dioxide diffuses from
Q183: In external respiration, carbon dioxide diffuses from
Q184: In external respiration, the PCO2 in the
Q186: The muscles that bring about inhalation are
Q187: During inhalation, intrapulmonic pressure _, and air
Q188: The air pressure outside the body is
Q189: The air pressure within the bronchial tree
Q190: A forced exhalation requires the _ muscles,
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