PHYSIOLOGY
SYNAPTIC PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Potassium, ADP, Phosphorous
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Calcium, Potassium, Phosphorous
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Sodium, Potassium, Glucose
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Calcium, ATP, Sodium
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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. The hydrolysis of ATP is used to provide energy for muscle contraction.
Detailed explanation-2: -Muscle contraction is driven by the interaction between two proteins, myosin and actin, and fueled by the hydrolysis of ATP.
Detailed explanation-3: -The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP) – the body’s biochemical way to store and transport energy.
Detailed explanation-4: -Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.
Detailed explanation-5: -Myosin. Actin. Tropomyosin. Troponin. ATP. Calcium Ions (cat)