Multiple Choice
The most common cause of myasthenia gravis is
A) Excess acetylcholinesterase
B) Failure of vesicle fusion on the presynaptic neuronal mem brane
C) Increased diffusion distance to the muscle mem brane
D) Autoimmune destruction of the acetylcholine receptor
E) Poisoning by curare
Correct Answer:
Verified
Correct Answer:
Verified
Q15: There is no force developed in the
Q16: The voltage-sensor on the muscle membrane is
Q17: The action potential on the axon at
Q18: Opening of acetylcholine receptors by acetylcholine directly
Q19: A nerve has a resting m embrane
Q20: The end-plate potential<br>A) Is graded (varies continuously)<br>B)
Q21: The acetylcholinesterase at the neuromuscular junction is
Q22: A neurotransmitter released onto a motor neuron
Q23: Wave summation and tetany of muscle contraction
Q24: The final intracellular activator of skeletal muscle