A 30-year-old woman complains of extreme fatigue following even mild exercise. These symptoms become worse throughout the day. You diagnose this patient with myasthenia gravis (MG). In most patients with MG autoantibodies cause a decrease in:

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Myasthenia gravis is an autoimmune disorder characterized by the production of autoantibodies against the acetylcholine receptors at the neuromuscular junction, leading to a decrease in the postsynaptic (endplate) potential. This impairs the ability of the muscle to contract in response to nerve impulses.

A 30-Year-Old Woman Complains of Extreme Fatigue Following Even Mild