Multiple choice

Fatigue in muscles is due to the excessive accumulation of

  1. lactic acid

  2. citric acid

  3. CO2

  4. acetic acid

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

During anaerobic respiration in muscles, pyruvate is converted to lactic acid. When lactic acid accumulates faster than it can be cleared, it causes muscle fatigue and burning sensation.