Myasthenia gravis is a disorder of:
A. Motor neuronB. Neuromuscular junction
C. Peripheral nerve
D. Spinal cord
Ans. B
Myasthenia gravis is a neuromuscular disorder
characterized by weakness and fatiguability of skeletal muscle. The underlying
defect is a decrease in the number of available cicotinic Ach receptor at the
Neuromuscular junction due to an antibody mediatd autoimmune attack.
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