A test to measure electrical activity across muscle membranes by means of electrodes that are attached to a needle inserted into the muscle is:
A) muscle biopsy.
B) lactic dehydrogenase.
C) creatine phosphokinase.
D) electromyography.
D
Explanation:
A) A biopsy is removal of a sample of tissue.
B) Lactic dehydrogenase is a blood test.
C) Creatine phosphokinase is a blood test.
D) Correct.
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