In internal respiration ,oxygen is carried by arteries into the cells and waste carbon dioxide moves out into the veins.
What is Internal respiration?
Internal respiration is the process by which oxygen move from the blood to the interstitial fluid and into the cells where by Waste and carbon dioxide are removed from the other direction, from the cells to the blood.
Therefore, In internal respiration ,oxygen is carried by arteries into the cells and waste carbon dioxide moves out into the veins because arteries carries oxygenated blood while veins carries deoxygenated blood.
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