Question

Write a short note on exchange of gases in tissues

Answer 1

Answer:

Tissue get oxygen throug heamoglobin of blood where it received from alveoli..then oxygen get dissolved in cells ,because of low oxygen concentration in them.the cells utilise oxygen to break down food as energy and produces co2 as byproduct..then this co2 Is again carried back to alveoli through blood.the co2 get dissolved in alveoli because of low concentration of co2 in them.alveoli send co2 back to lungs .from there we exhale and get rid of it.this process will be vice versa.

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Answer 2

Explanation:

During pulmonary gas exchange oxygen from inhaled air is diffused into the alveoli in the lungs and the wast product carbon dioxide from the body diffuses out through the alveoli to be exhaled back into the air. With the help of the cardiovascular system the freshly inhaled O2 rich blood is transported to the tissues of the body. At this point the final stage of respiration occurs as the much needed O2 is absorbed by the tissues and the waste CO2 that the tissues have created is diffuses back into the blood and is transported back to the lungs to be exhaled.