Which of the following is thought to be cause of muscular fatigue? Decrease level of lactate within the muscle cell Decrease level of extracellular potassium outside of muscle cell Increased level of acetylcholinesterase in the synaptic cleft Increase level of intracellular ATP within muscle cell Increase level of phosphate within muscle cell
Which of the following is thought to be cause of muscular fatigue?
Decrease level of lactate within the muscle cell
Decrease level of extracellular potassium outside of muscle cell
Increased level of acetylcholinesterase in the synaptic cleft
Increase level of intracellular ATP within muscle cell
Increase level of phosphate within muscle cell
Muscle fatigue is the decrease in capacity of a muscle to create power. It very well may be a consequence of lively exercise however anomalous fatigue might be brought about by barriers to or impedance with the various phases of muscle constriction. There are two primary reasons of muscle fatigue: the limitations of a nerve's capacity to produce a continued signal (neural fatigue) and the diminished capacity of the muscle fiber to contract (metabolic fatigue).
Increased levels of lactate or lactic acid cause muscle fatigue. Hence the first option is incorrect.
Increased level of extracellular potassium causes muscle fatigue. Hence the second option is incorrect.
Decreased levels of acetylcholinesterase in the synaptic cleft causes muscle fatigue. Hence the third option is incorrect.
Decreased levels of intracellular ATP within muscle cells cause muscle fatigue. Hence the fourth option is incorrect.
Inorganic phosphate (Pi), which increases during fatigue due to breakdown of creatine phosphate, appears to be a major cause of muscle fatigue. Hence the fifth option is correct.
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