Immediate energy source for muscle contraction, until depletion is

ATP

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ADP

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Glucose

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Lactic acid

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Solution

The correct option is A ATP
Muscles need the energy to produce contractions. The energy is derived from adenosine triphosphate (ATP) present in muscles. Muscles tend to contain only limited quantities of ATP. When depleted, ATP needs to be resynthesized from other sources, namely creatine phosphate (CP) and muscle glycogen.

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The only immediate source of energy for muscular contraction is

Read the following statements about muscle contraction in humans:

i. Chemical energy is converted into mechanical energy during muscle contraction

ii. Acetylcholineeasterase is an enzyme that catalyzes the production of acetylcholine

iii. In a contracted muscle, volume remains the same.

iv. A contracted muscle becomes shorter and thicker.

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