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A diaphragm is a thin sheet which separates two volumes or spaces (from Greek for barricade). They are manufactured for a variety of uses; in microphones and earpieces, pumps, and barriers to the passage of sperm for contraception. Many exist in living things, the eardrum being a small but important one.

All the above mentioned things would be called a diaphragm. The diaphragm is one particular kind; it is a muscle that is located under the lungs that contracts to let air into the lungs. When the diaphragm "moves down" it causes you to inhale and when your diaphragm relaxes to form a dome shape muscle you exhale.

If we didn't have a diaphragm then we wouldn't be able to give birth. The diaphragm also makes us have hiccups! When the regular rhythmic contraction gets disturbed we appear to end up with hiccups.

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8y ago

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