Which statement about somatic effects is true?

Which statement about somatic effects is true?

• A. They occur in the irradiated person during life
• B. They occur in offspring
• C. They are purely environmental
• D. They are never dose-related

Answer: (A)

Somatic effects are changes that occur in the body of the person who was exposed to ionizing radiation, and they appear during that person's lifetime. They are not passed on to offspring—that would be genetic effects. Radiation effects are not purely environmental; they arise from the dose received and can show dose-dependent responses: deterministic effects have thresholds (like skin changes or cataracts at higher doses), while stochastic effects (like cancer) increase in probability with dose. So the statement that somatic effects occur in the irradiated person during life is the correct one.

Somatic effects are changes that occur in the body of the person who was exposed to ionizing radiation, and they appear during that person's lifetime. They are not passed on to offspring—that would be genetic effects. Radiation effects are not purely environmental; they arise from the dose received and can show dose-dependent responses: deterministic effects have thresholds (like skin changes or cataracts at higher doses), while stochastic effects (like cancer) increase in probability with dose. So the statement that somatic effects occur in the irradiated person during life is the correct one.