PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following ions does not play a key role in muscle contraction?
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sodium
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phosphorus
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calcium
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None of the above
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Explanation:
Detailed explanation-1: -Both calcium & magnesium are required for muscle contraction. Calcium binds to troponin which exposes the active sites on actin. Now myosin head can bind the active sites on actin, initiating the process of muscle contraction.
Detailed explanation-2: -Instead, inorganic phosphate, which increases during fatigue due to breakdown of creatine phosphate, appears to be a major cause of muscle fatigue. The energy consumption of skeletal muscle cells may increase up to 100-fold when going from rest to high-intensity exercise.
Detailed explanation-3: -Phosphorus helps filter out waste in the kidneys and plays an essential role in how the body stores and uses energy. It also helps reduce muscle pain after a workout.
There is 1 question to complete.