Which of the following diagnostic tests measures how fast an impulse travels along a nerve?
A) nerve conduction velocity
B) lumbar puncture
C) positron emission tomography
D) cerebral angiography
A
Explanation: A nerve conduction velocity test measures how fast an impulse travels along a nerve. A lumbar puncture is a puncture with a needle into the lumbar area to withdraw fluid for examination and for the injection of anesthesia. Positron emission tomography uses positively charged isotopes to obtain an image of the brain. Cerebral angiography is an X-ray of the blood vessels of the brain after the injection of radiopaque dye.
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The Clinical Laboratory Improvement Amendment of 1988:
A) regulates all physicians' offices. B) sets standards and regulates all laboratories. C) provides a waiver for simple tests that can be performed in non-laboratory settings. D) does all of the above.
Which of the following is a term meaning a substance that causes an allergic reaction?
A) allogen B) allergen C) allergy D) allergist
Owing to the location of the ?-chain locus of the T-cell receptor on chromosome 14, if the _______-chain locus rearranges by somatic recombination, then the ?-chain locus is _______:
a. ?; also rearranged b. ?; deleted c. ?; transcribed d. ?; deleted e. ?; also rearranged.
Answer the following statement(s) true (T) or false (F)
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