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(A) : Myasthenia gravis is an autoimmune disorder in which autoantibodies bind to cholinergic receptors on muscle cells and impair the ability of the

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Failure of neuromuscular transmission in myasthenia gravis can prevent normal swallowing.

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(A) : Myasthenia gravis is an autoimmune disorder in which autoantibodies bind to cholinergic receptors on muscle cells and impair the ability of the neurotransmitter acetylcholine to induce muscular contraction. This leads to fatigue,weakening,and paralysis of skeletal muscles of the mouth and throat,which may prevent normal swallowing.$B$: Gouty arthritis is caused by the accumulation of uric acid crystals in the joints,not urea or creatine,causing inflammation.$C$: Osteoporosis is typically caused by a deficiency of vitamin $D$,not an overdose.$D$: Muscular dystrophy is a genetic disorder characterized by the progressive degeneration of skeletal muscles,not by rapid contractions.

Select the correct statement with respect to disorders of muscles in humans.

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