Neostigmine, used to treat myasthenia gravis, blocks the enzyme that degrades ________. This helps treat the disease because ________.
A. nicotine; it destroys the antibodies that block nicotinic ACh receptors on the motor end plate
B. acetylcholine; it destroys the antibodies that block nicotinic ACh receptors on the motor end plate
C. acetylcholine; it increases the amount of acetylcholine available to bind to receptors on the motor end plate
D. norepinephrine; it increases the amount of acetylcholine available to bind to receptors on the motor end plate
Answer: C
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