2018 · Q50
Accumulation of which one of the following in the muscles of sprinters leads to cramp?
General KnowledgeBiology
- ALactic acid
- BEthanol
- CPyruvic acid
- DGlucose
Explanation
During sprinting, muscles work anaerobically and break down glucose to lactic acid faster than the blood can clear it. The accumulating lactic acid causes the burning sensation and cramp. Ethanol, pyruvic acid and glucose do not produce cramps. Hence the answer is lactic acid.