What is the general order of available energy sources in muscles during strenuous exertion?
A)glycogen ATP glucose fatty acids phosphocreatine
B)ATP phosphocreatine glycogen glucose fatty acids
C)phosphocreatine glucose ATP fatty acids glycogen
D)fatty acids phosphocreatine ATP glucose glycogen

Question

What is the general order of available energy sources in muscles during strenuous exertion?
A)glycogen > ATP > glucose > fatty acids > phosphocreatine
B)ATP > phosphocreatine > glycogen >glucose > fatty acids
C)phosphocreatine > glucose > ATP > fatty acids > glycogen
D)fatty acids > phosphocreatine > ATP > glucose > glycogen

Quizplus · Accepted Answer

During strenuous exertion, the body relies on ATP and phosphocreatine first, as they are the immediate sources of energy. Then, as these stores are depleted, the body turns to glycogen, followed by glucose and fatty acids. Therefore, the correct order is ATP > phosphocreatine > glycogen > glucose > fatty acids, which corresponds to choice B.

What Is the General Order of Available Energy Sources in Muscles