Answers

2015-07-11T17:26:31+05:30
They are little sacs present at the end of bronchi in the lungs. They process the oxygen and add it to the blood for transportation. I am not actually sure because I am not so good in bio so please confirm it from others and have a nive day!
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2015-07-18T17:06:03+05:30
The bronchii of the lungs are divided into alveoles and they are sacs present at their end which help on gaseous exchange
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