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) nerve conduction velocity
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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Which breath sound is a high-pitched, harsh, crowing sound caused by obstruction in the trachea or larynx?
A) wheezes B) rales C) stridor D) rhonchi
Cardiovascular disease
A) occurs in nearly 25 percent of African Americans. B) causes nearly 25 percent more deaths each year than it did a decade ago. C) is second only to cancer as a leading cause of death among Americans. D) has been the leading cause of death in the U.S. for nearly 100 years.
Located above the outer corner of the eye, the ________ secretes tears through approximately 12 ducts onto the surface of the conjunctiva of the upper lid
Fill in the blank(s) with correct word