Question

this exam is closed - book. before starting, make sure you have studied all of the questions on your previous ct quizzes. question 35 2 pts myasthenia gravis (mg) is a disorder of neuromuscular transmission that causes muscle weakness. acquired mg is caused by an immune system dysfunction that produces autoantibodies against acetylcholine receptors in the presynaptic membrane. acetylcholine receptors in the postsynaptic membrane. calcium channels in the postsynaptic membrane. actin fibers in the postsynaptic membrane.

Explanation:

Myasthenia gravis is an autoimmune disorder where the immune - system produces autoantibodies against acetylcholine receptors in the postsynaptic membrane of the neuromuscular junction, interfering with neurotransmission and causing muscle weakness.

Answer:

B. acetylcholine receptors in the postsynaptic membrane