MEDICINE
RADIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cell membrane
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cytoplasm
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nucleus
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organelles
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Detailed explanation-1: -It has long been thought that the cell nucleus is the target for the important biologic effects of radiation; these effects occur in the irradiated cell as a direct result of DNA damage that has not been correctly restored by enzymatic repair processes.
Detailed explanation-2: -The term “radiation sensitivity” describes the sensitivity of organisms to the effect of ionising radiation. The cause of radiation sensitivity may be the insufficient repair and/or misrepair of the radiation-damaged genetic material of the cells ( DNA ), for instance due to defective repair mechanisms.
Detailed explanation-3: -From these discussions we can conclude that Bone marrow is the most radiosensitive tissue of the body.
Detailed explanation-4: -After exposure to low-LET radiations, the most radiosensitive cell stages are mitosis and the G1/S interface.