In myasthenia gravis, acetylcholine

Receptors on motor end plate are blocked

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Secretion from nerve terminals is reduced

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Esterase activity is prohibited

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Secretion from nerve terminals is enhanced

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Solution

The correct option is A Receptors on motor end plate are blocked
Myasthenia gravis a chronic autoimmune disease in which weakness of the skeletal muscles of the body occurs. In Myasthenia gravis, antibodies block the receptors for acetylcholine at the synapse, which prevents the muscle contraction.
Therefore, the correct answer is option A.

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