During inspiration, air moves into the lungs because __________. abdominal muscles contract the gas pressure in the lungs becomes lower than the outside pressure as the diaphragm contracts the volume of the lungs decreases with inspiration contraction of the internal intercostal muscles decreases the thoracic cavity volume contraction of the diaphragm decreases the volume of the pleural cavity

During inspiration, air moves into the lungs because __________.

abdominal muscles contract
the gas pressure in the lungs becomes lower than the outside pressure as the diaphragm contracts
the volume of the lungs decreases with inspiration
contraction of the internal intercostal muscles decreases the thoracic cavity volume
contraction of the diaphragm decreases the volume of the pleural cavity

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