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Breathing and Blood: Systems in Harmony

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Fill blanks about respiration and circulation.

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Philippines

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Breathing and Blood: Systems in Harmony
 

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Breathing and Blood: Systems in HarmonyOnline version

Fill blanks about respiration and circulation.

by Zenaida Gonzales
1

The ensures oxygen uptake and carbon dioxide removal . In the lungs , tiny sacs called facilitate gas exchange as air passes through the bronchi and into the blood . Red blood cells rely on to bind oxygen and release it where needed , supporting cellular metabolism . Oxygen - rich blood travels through and reaches capillaries near tissues , allowing diffusion into cells . The circulatory system then returns deoxygenated blood to the lungs for another cycle , sustaining energy for every organ .

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