Which of the following is a by-product of the anaerobic lactic system?

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The anaerobic lactic system, also known as anaerobic glycolysis, primarily generates energy in the absence of sufficient oxygen. In this process, glucose is broken down to produce ATP, the energy currency of the cell. A by-product of this breakdown is lactic acid, which is formed when pyruvate, the end product of glycolysis, is converted in the presence of limited oxygen.

Lactic acid accumulation is significant during high-intensity exercise when the demand for energy exceeds the oxygen supply. This by-product is important to recognize as it can influence muscle performance and lead to the sensation of fatigue. The body can later convert lactic acid back into glucose through a process known as gluconeogenesis, illustrating its role in energy metabolism.

While heat is produced as a by-product of all forms of metabolism, it is not specific to the anaerobic lactic system. ADP is a component of the ATP regeneration process, and creatine is involved in the phosphagen energy system rather than the anaerobic lactic system. Thus, the lactic acid formed is the key outcome associated with this energy-generating pathway.

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