PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Synthesis of ATP
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Metabolism of ATP
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Synthesis of Proteins
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Metabolism of Worn out Proteins
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Detailed explanation-1: -ATP produced by mitochondria (and glycolysis) is used to drive both crossbridge cycling during muscle contraction and Ca2+ reuptake into the SR during relaxation. Thus, regulation of muscle contraction requires careful dynamic control by the SR and mitochondria of sarcomeric Ca2+ and ATP availability.
Detailed explanation-2: -During strenuous exercise, the rate of energy use in skeletal muscles can increase by more than 100-fold almost instantly. To meet this energy demand, muscle cells contain mitochondria. These organelles, commonly referred to as the cell’s “power plants, ‘’ convert nutrients into the molecule ATP, which stores energy.
Detailed explanation-3: -The classic role of mitochondria is oxidative phosphorylation, which generates ATP by utilizing the energy released during the oxidation of the food we eat. ATP is used in turn as the primary energy source for most biochemical and physiological processes, such as growth, movement and homeostasis.