Mondo Knows Facts
The diaphragm is the primary muscle responsible for breathing
Dome-shaped muscle contracts downward to draw air deep into the lungs
The diaphragm is a sheet of skeletal muscle separating the thoracic and abdominal cavities. When it contracts, it flattens and moves downward, creating negative pressure inside the chest cavity that draws atmospheric air into the expanding lungs.
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Tags: lungs, diaphragm, breathing
The diaphragm is the primary muscle responsible for breathing: the short answers
- Where does this come from, and can I check it?
- Dome-shaped muscle contracts downward to draw air deep into the lungs. The figure is taken from MedlinePlus, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
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- Yes. It sits on the Human Body shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
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