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What is the diaphragm's role in breathing?

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Inhalation and exhalation are the processes by which the body brings in oxygen and expels carbon dioxide. The breathing process is aided by a large dome-shaped muscle under the lungs called the diaphragm. When you breathe in, the diaphragm contracts downward, creating a vacuum that causes a rush of fresh air into the lungs. The opposite occurs with exhalation, where the diaphragm relaxes upwards, pushing on the lungs, allowing them to deflate.

SOURCES:

TeensHealth: "Lungs and Respiratory System."

American Lung Association: "Learn About Your Respiratory System."

American Medical Association: "Respiratory System: Basic Function."

Reviewed by William Blahd on July 14, 2017

SOURCES:

TeensHealth: "Lungs and Respiratory System."

American Lung Association: "Learn About Your Respiratory System."

American Medical Association: "Respiratory System: Basic Function."

Reviewed by William Blahd on July 14, 2017

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How does the respiratory system work to clean the air?

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