MUSCLE PHYSIOLOGY

PHYSIOLOGY

DIFFERENT TYPE AND STRUCTURE OF MUSCLE FIBERS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the buildup that cause muscle fatigue?
A
Oxidative fibers
B
ATP
C
Lactic acid
D
Phosphate
Explanation: 

Detailed explanation-1: -This burning sensation is associated with a buildup of acid in the muscles during intense exercise, and lactic acid has long been thought to be the culprit in that acid buildup, known as acidosis. Lactic acid is a byproduct of anaerobic metabolism, in which the body produces energy without using oxygen.

Detailed explanation-2: -Lactic acid is mainly produced in muscle cells and red blood cells. It forms when the body breaks down carbohydrates to use for energy when oxygen levels are low. Times when your body’s oxygen level might drop include: During intense exercise.

Detailed explanation-3: -Intracellular acidosis due mainly to lactic acid accumulation has been regarded as the most important cause of skeletal muscle fatigue.

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