CBSE Class 10 Answered
describe respiration of man?
Asked by | 13 Jul, 2008, 04:06: PM
Expert Answer
Respiration is a process of taking in of oxygen and giving out carbondioxide, with the release of energy.
Air is taken in through the nostrils and finally reaches the alveoli of lungs through the respiratory passage. The air brought into alveoli is rich in oxygen. This oxygen is taken up by blood in the alveolar blood vessels to be transported to all the cells in the body. In the tissues, oxygen diffuses from the blood vessels into the tissues where it is used for oxidation of food and release of energy. The carbon dioxide released then diffuses from tissues into the blood and is carried to the lungs to be exhaled.
Answered by | 14 Jul, 2008, 11:21: AM
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