<prompt> Which of the following is involved in the pathogenesis of myasthenia gravis?Mutation in ryanodine receptorsAutoantibodies against acetylcholine receptorsAutoantibodies against synaptobrevinAutoantibodies against presynaptic calcium channels  <response>: Pathogenesis of myasthenia gravis Autoimmune disorder Muscle weakness Formation of auto-antibodies against acetylcholine receptors. - Post synaptic defect 