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Essay Galaxy - Oxygen
Oxygen
Oxygen is required for the release of energy from food molecules (aerobic respiration). Instead of breaking down food molecules completely, muscle cells switch to a form of partial breakdown that does not require oxygen (anaerobic respiration) so that they can continue to generate energy. This partial breakdown produces lactic acid, which results in a sensation of fatigue when it reaches certain levels in the muscles and the blood. Once the vigorous muscle movements cease, the body breaks down the lactic acid, using up extra oxygen to do so. Panting after exercise is an automatic mechanism to 'pay off' the oxygen debt.
Lactic acid or CH3CHOHCOOH organic acid, a colorless, almost odorless liquid, produced by certain bacteria during fermentation and by active muscle cells when they are exercised hard and are experiencing oxygen debt. An accumulation of lactic acid in the muscles may cause cr....
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Number Of Pages: 11 |
Number Of Words: 2774 |
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