Exam 12: Peripheral Nervous System

If NCV studies show that conduction is slowed at a single site in one nerve,yet the NCV is normal throughout the remainder of the nerve and in other nerves,the disorder is characterized as which of the following?

What does the lumbar plexus innervate?

Trophic changes after denervation include which of the following?

What does the sacral plexus innervate?

Myasthenia gravis is an autoimmune disease affecting the:

Guillian-Barré syndrome is an autoimmune disease that causes:

Which one of the plexes innervates the posterior thigh and most of the leg and foot?

What occurs when a nerve is stretched past the capacity of the surrounding structures?

What is the most important branch of the cervical plexus?

In a recording from a nerve conduction velocity (NCV)study,decreased amplitude of recorded potentials,combined with slowing of NCV,indicates which of the following?

If the NCV is normal along the length of the peripheral nerve,yet the amplitude of the electromyogram (EMG)potential is decreased,the disorder is:

Which of the following characteristics distinguish central nervous system dysfunction from peripheral nervous system dysfunction?

Miniature endplate potentials are essential for which of the following?

The brachial plexus emerges from:

What is the most functionally important branch of the cervical plexus?