Which of the following is NOT a contributing factor to skeletal muscle fatigue? A)increased intracellular K⁺ B)depletion of intracellular K⁺ C)accumulation of extracellular K⁺ D)accumulation of cytoplasmic PO₄^3-

Question

Quizplus · Accepted Answer

The term "K⁺" and similar variations do not correspond to any known substances related to muscle physiology or biochemistry. Therefore, options B, C, and D, which discuss changes in levels or locations of this non-existent substance, can be considered as potentially relevant factors in muscle fatigue based on the context of known substances that do contribute to fatigue (like ions, lactate, etc.). Option A, stating "increased intracellular K⁺" as not contributing to skeletal muscle fatigue, is incorrect because the substance does not exist, making it impossible to contribute to or not contribute to muscle fatigue.

Which of the Following Is NOT a Contributing Factor to Skeletal