The Muscle Weakness of Myasthenia Gravis Results from

Multiple Choice

The muscle weakness of myasthenia gravis results from

A) insufficient acetylcholine release from presynaptic vesicles.
B) loss of acetylcholine receptors in the end-plate membrane.
C) the motor neuron action potential being too small to shock the muscle fibers.
D) excessive acetylcholinesterase that destroys the neurotransmitter.
E) inability of the muscle fiber to produce ATP.