Respiratory System

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Man holding breath underwater showing lungs and brain oxygen deprivation illustration

🫁 What Happens When You Hold Your Breath Too Long? The Science Behind Oxygen Starvation

Try this for a moment. What happens when you hold your breath too long Take a deep breath… and hold it. Within seconds, your chest tightens. Your brain screams for…

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Dr sanjay prajapati February 12, 2026

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Notes of Breathing and Exchange of Gases class 11

1. BREATHING --> Process of exchange of O2 from the atmosphere with CO2 produced by the cells is called breathing, commonly known as respiration.notes of breathing and exchange of gases…

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Dr sanjay prajapati September 1, 2023

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