In a healthy adult at rest, approximately how much time is required for the entire heart to depolarize?

a. 0.002 seconds c. 2.2 seconds
b. 0.02 seconds d. 0.22 seconds


b. 0.02 seconds

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Which of the following clinical findings suggest the child with croup should be hospitalized? 1. Stridor at rest 2. Suprasternal retractions 3. Cyanosis on room air 4. Harsh breath sounds

a. 1 only b. 1 and 2 only c. 1, 3, and 4 only d. 1, 2, 3, and 4

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____ ice is ice with a layer of frozen snow on top of it.

A. Clear B. Rotten C. Snow D. River

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Toxoplasma meningoencephalitis __________

Fill in the blank(s) with the appropriate word(s).

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Elevations in brain natriuretic peptide (BNP) in the blood have become the "marker" for which of the following conditions?

A) Liver failure B) Brain cancer C) Congestive heart failure D) Pancreatitis

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