What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue ?

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Q: 256 (SSC/NA)
What accumulates in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue ?

question_subject: 

Science

question_exam: 

SSC

stats: 

0,16,3,3,16,0,0

keywords: 

{'muscular fatigue': [1, 0, 0, 0], 'temporary anaerobic respiration': [1, 0, 0, 0], 'atp': [2, 0, 0, 0], 'continuous strenuous physical exercise': [1, 0, 0, 0], 'muscles': [1, 0, 0, 1], 'lactic acid': [0, 0, 1, 2], 'carbon dioxide': [2, 0, 5, 6], 'ethyl alcohol': [0, 1, 0, 0]}

After continuous strenuous physical exercise, when the muscles are not getting enough oxygen, temporary anaerobic respiration occurs. This process leads to the accumulation of lactic acid in the muscles, causing muscular fatigue. Lactic acid is produced when the body converts glucose into energy without the presence of enough oxygen.

Option 1: ATP (adenosine triphosphate) is the energy currency of the body and is not accumulated in the muscles during exercise.

Option 3: Ethyl alcohol is not produced as a result of anaerobic respiration in the muscles during exercise. It is produced through the fermentation of sugars by certain microorganisms.

Option 4: Carbon dioxide is a waste product of aerobic respiration and is not accumulated in the muscles from anaerobic respiration during exercise.

Therefore, the correct answer is option 2, lactic acid.