Which part of the body is most sensitive to radiation exposure?

Question

Question

Answer 1

Correct Answer: Gonads

Rationale:

The gonads, which include the ovaries in females and the testes in males, are highly sensitive to radiation exposure. This sensitivity is due to the presence of rapidly dividing cells that are crucial for reproduction.
Radiation can damage the DNA in these cells, leading to mutations and potentially causing infertility or hereditary genetic disorders.
The high radiosensitivity of gonads necessitates careful protection during radiation therapy or diagnostic procedures involving radiographic imaging.

Explanation of Other Options:

Skin

Rationale: The skin is also sensitive to radiation, but it is less sensitive than the gonads. Prolonged or high-dose exposure can lead to radiation burns, dermatitis, or an increased risk of skin cancer. However, the cells in the skin have a higher capacity for repair compared to reproductive cells.

Bone

Rationale: Bone tissue is relatively less sensitive to radiation compared to other tissues. While high doses can damage bone marrow and affect blood cell production, the bone itself has a lower cellular turnover, making it less vulnerable to radiation damage.

Brain

Rationale: The brain is considered to be less sensitive to radiation than the gonads. Neurons do not divide and are less susceptible to radiation-induced DNA damage. However, high doses can still cause significant neurological damage, including cognitive deficits and other functional impairments.

Conclusion:

Among the given options, the gonads are the most sensitive to radiation exposure due to the high rate of cell division and the critical role of these cells in reproduction and genetic integrity. Protecting the gonads from radiation is crucial to prevent long-term genetic and reproductive health issues.