which of the following statements describes the function of the diaphragm?
Answers
Answer:
The diaphragm is a muscle that helps you breathe. It sits under your lungs and separates your chest cavity from your abdomen. Many conditions, injuries and diseases can affect how the diaphragm works, causing symptoms such as trouble breathing and chest pain. Breathing exercises can strengthen your diaphragm and keep it working like it should.
Explanation:
The diaphragm plays a critical role in the respiratory system. When you breathe in, your diaphragm contracts (tightens) and flattens, moving down towards your abdomen. This movement creates a vacuum in your chest, allowing your chest to expand (get bigger) and pull in air. When you breathe out, your diaphragm relaxes and curves back up as your lungs push the air out.
The diaphragm helps in the inspiration and expiration of air in and out of the lungs. At the time of inspiration, the diaphragm contracts, increasing the pulmonary volume, thereby reducing the intrapulmonary pressure to less than the atmospheric pressure, and air moves into the lungs.At the time of expiration, the diaphragm relaxes, reducing the pulmonary volume and thereby increasing the intrapulmonary pressure slightly more than the atmospheric pressure. This leads to the expulsion of air from the lungs.
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