A client with Parkinson's disease is visiting a health clinic for a check-up. Which of the following tests might be ordered to determine whether the client's muscles respond appropriately to stimuli?
A) Myelogram
B) Electromyogram
C) Computed tomography
D) Magnetic resonance imaging
B
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The electromyogram (EMG) is a test of electrical conductivity, similar to the electrocardiogram (ECG) or the electroencephalogram (EEG). The provider places fine needles into the client's muscles (my/o = muscle), and measures the electrical impulses within the muscles, both at rest and during activity. The provider can then determine whether the client's muscles respond appropriately to stimuli. The myelogram (myel/o = spinal cord; bone marrow) is an x-ray examination of the spinal cord and vertebral canal. Computed tomography (CT) scanning provides a three-dimensional radiographic view of a body part. In magnetic resonance imaging (MRI), a powerful magnetic field enables a scanning machine to produce detailed images of internal organs.
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