Explain entry of oxygen in blood in lungs Don't spam or I will report your answer
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Answer:
Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood.
A protein called haemoglobin in the red blood cells then carries the oxygen around your body. At the same time, carbon dioxide that is dissolved in the blood comes out of the capillaries back into the air sacs, ready to be breathed out.Oxygen and the alveoli
Blood with fresh oxygen is carried from your lungs to the left side of your heart, which pumps blood around your body through the arteries.
Blood without oxygen returns through the veins, to the right side of your heart. From there it is pumped to your lungs so that you can breathe out the carbon dioxide and breathe in more oxygen.
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Explanation:
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When we breathe in oxygen, it enters in the lungs(in alveoli) in order to enter the blood. When oxygen enters the blood through alveoli, carbon dioxide enters into alveoli(through capillary and blood streams- deoxygenated blood) which then is exhaled out of our body. As oxygen is necessary for burning of food, heat and water vapour is also exhaled along with Carbon dioxide.
RBCS in blood carry haemoglobin which helps in transportation of oxygen and nutrients. Transportation of O2 is their main function.