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This is the diaphragm.

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12y ago
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6mo ago

The muscle that separates the thorax and abdomen and aids in breathing is called the diaphragm. It is a dome-shaped muscle that contracts and relaxes to regulate the volume of the thoracic cavity, allowing for inhalation and exhalation.

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Q: What muscle separates the thorax and abdomen and aids in breathing?
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What muscle separates the chest from the abdomen and forms the floor of the thorax?

The muscle that separates the chest from the abdomen and forms the floor of the thorax is called the diaphragm.


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The difference between the thorax and the abdomen is the position they lie in. The thorax lies between the head and the abdomen while the abdomen lies between the thorax and the pelvic area.


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