Question

The accumulation of lactic acid in muscle cells causes ______.

• A. cramps
• B. heart blockage
• C. boils
• D. stroke

Answer 1

The correct option is A

cramps

Lactic acid is a byproduct of anaerobic respiration of glucose. During heavy exercises or prolonged physical activity, there is a deficit of oxygen required to enable all the muscle cells to generate energy aerobically. Muscle cells then respire anaerobically and produces lactic acid. Accumulation of lactic acid in the muscles causes cramps.