The earliest detectable physical change due to a large radiation exposure is

sterility.
presence of mutations.
a drop in lymphocyte count.
shortening of the life span.

a drop in lymphocyte count.

Rationale: A drop in lymphocyte count would be an indication of the earliest detection of radiation exposure because rapidly dividing cells are the most prone to damage.

Health Professions

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A sudden onset of respiratory distress in a 5 year old child with no fever most likely is the result of

A. infection of the lower airways B. inflammation of the upper airway C. a progressive upper airway infection D. obstruction of the airway by a foreign body

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How many inches does the diaphragm move between a good inspiration and expiration?

A. 1 B. 3 C. 6 D. 8

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