The nurse is teaching a client recently di
题型:单项选择题
问题:
The nurse is teaching a client recently diagnosed with myasthenia gravis. The nurse should teach the client that myasthenia gravis is caused by
A.genetic dysfunction.
B.upper and lower motor neuron lesions.
C.decreased conduction of impulses in an upper motor neuron lesion.
D.a lower motor neuron lesion.