Answer :
When heart muscle cells are deprived of oxygen, the cells must be able to produce energy anaerobically.
This means that the cells must be able to break down glucose without oxygen to produce ATP. The cells can only produce a small amount of ATP anaerobically, so the heart can only pump for a short period of time before the cells start to die.
The heart cells must be able to generate energy anaerobically in order to continue pumping when deprived of oxygen. When the body is oxygen-deficient, it cannot produce ATP aerobically through oxidative phosphorylation. Instead, it must generate ATP through anaerobic respiration, which is a slower process that produces less ATP. The heart cells must be able to tolerate the lack of oxygen and continue generating ATP anaerobically in order to keep the heart pumping.
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