Possible radiation exposure paths include:

Possible radiation exposure paths include:

• A. Inhalation
• B. Ingestion
• C. Absorption
• D. All of the above

Answer: (D)

Exposure to radioactive materials can enter the body through multiple routes, not just one. Breathing in contaminated air or dust allows particles to deposit in the lungs (inhalation), which is a major exposure pathway for many radionuclides. Contaminated hands, food, or water can lead to swallowing radioactive material (ingestion), delivering activity to the gastrointestinal tract and potential systemic distribution. Contact with contaminated material on the skin can result in absorption through the skin or entry through cuts or abrasions (absorption). Because all of these pathways are biologically plausible depending on how the contamination occurs and the chemical form of the radionuclide, the most comprehensive choice is all of the above.

Exposure to radioactive materials can enter the body through multiple routes, not just one. Breathing in contaminated air or dust allows particles to deposit in the lungs (inhalation), which is a major exposure pathway for many radionuclides. Contaminated hands, food, or water can lead to swallowing radioactive material (ingestion), delivering activity to the gastrointestinal tract and potential systemic distribution. Contact with contaminated material on the skin can result in absorption through the skin or entry through cuts or abrasions (absorption). Because all of these pathways are biologically plausible depending on how the contamination occurs and the chemical form of the radionuclide, the most comprehensive choice is all of the above.