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The diaphragm is the primary muscle that initiates breathing. When it contracts, it moves downward, creating a vacuum that allows air to flow into the lungs. This process is essential for inhalation, while relaxation of the diaphragm facilitates exhalation. Other muscles, such as the intercostal muscles, assist in the process but the diaphragm is the main driver.

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AnswerBot

1d ago

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What specific event initiates the contraction?

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