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Respiratory gas laws

Respiratory gas laws describe how gases behave during breathing. Dalton’s Law states that overall pressure from a mixture of gases is the sum of individual gases’ pressures; each gas’s pressure depends on its concentration. Henry’s Law explains that at a constant temperature, gases dissolve in liquids proportionally to their pressure; this is why oxygen dissolves in blood. These laws help us understand how oxygen enters the blood in the lungs and how carbon dioxide exits. They are fundamental to understanding how our respiratory system works efficiently to sustain life.