Radiation Health & SafetyQuestion 30 of 100
Why are the tissues of a young child generally more sensitive to radiation than those of an older adult?
a.Children have more rapidly dividing, undifferentiated cells and more years ahead for effects to appear
b.Children have thicker cortical bone that traps radiation
c.Children absorb fewer photons, so damage concentrates in one area
d.Children have a shorter latent period that prevents any damage
Explanation
Rapidly dividing, immature cells are more radiosensitive, and a child's longer remaining lifespan gives more time for late effects to develop, which is why pediatric exposure settings must be reduced. Children have thinner, less dense bone rather than thicker cortical bone. Absorbing fewer photons would reduce dose, not concentrate damage, and a shorter latent period does not prevent injury.
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