Determine what happens when the diaphragm relaxes.Hint: Select three options.The lungs shrinkThe lungs expandAir pressure in the lungs increasesAir pressure in the lungs decreasesAir is drawn into the lungs (inhalation)Air is forced out of the lungs (exhalation)
Question
Determine what happens when the diaphragm relaxes.Hint: Select three options.The lungs shrinkThe lungs expandAir pressure in the lungs increasesAir pressure in the lungs decreasesAir is drawn into the lungs (inhalation)Air is forced out of the lungs (exhalation)
Solution 1
When the diaphragm relaxes:
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The lungs shrink: When the diaphragm relaxes, it moves back to its dome-shaped position, reducing the space in the chest cavity. This causes the lungs to shrink.
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Air pressure in the lungs increases: As the lungs shrink, the air inside them is compressed, leading to an increase in air pressure.
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Air is forced out of the lungs (exhalation): The increase in air pressure forces air out of the lungs, resulting in exhalation.
Solution 2
When the diaphragm relaxes:
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The lungs shrink: When the diaphragm relaxes, it moves back to its dome-shaped position, reducing the space in the chest cavity. This causes the lungs to shrink.
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Air pressure in the lungs increases: As the lungs shrink, the volume of the lungs decreases, causing the air pressure within the lungs to increase according to Boyle's law (pressure is inversely proportional to volume).
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Air is forced out of the lungs (exhalation): The increase in air pressure within the lungs forces air out of the lungs, resulting in exhalation.
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