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Two different pressures in respiration are crucial for effective breathing: intrapulmonary pressure and intrapleural pressure. Intrapulmonary pressure is the pressure within the lungs that changes during inhalation and exhalation, allowing air to flow in and out. Intrapleural pressure, which is always negative relative to intrapulmonary pressure, helps keep the lungs inflated and prevents their collapse. The difference between these pressures creates the necessary gradient for airflow during the breathing cycle.

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3w ago

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