In severe exercise, decrease in pH is due to:: (A) Respiratory acidosis, (B) Lactic acidosis, (C) H+ retention, (D) HCO3 excretion
Answer is B. Ans. (b) Lactic acidosis(Ref: Guyton, 13th ed/p.1085)Accumulation of lactic acid causes decrease in pH, muscle cramps and muscle fatigue,