Question

myasthenia gravis is a collection of muscle disorders that cause muscle fatigue and weakness. what is the major mechanism? multiple choice overproduction of acetylcholinesterase autoimmune destruction of nicotinic acetylcholine receptors demyelination of axons in motor pathways autoimmune destruction of l - type ca²⁺ channels a tumor that overproduces acetylcholine

Explanation:

Myasthenia gravis is an autoimmune disease where the immune - system mistakenly attacks nicotinic acetylcholine receptors at the neuromuscular junction, leading to muscle fatigue and weakness.

Answer:

B. Autoimmune destruction of nicotinic acetylcholine receptors