Most sensitive tissue to Radiation is –

Highly radiosensitive:- Lymphoid tissue, Bone marrow, Gonads, GIT epithelium, Embryonic tissue. Moderately radiosensitive:- Skin, vascular endothelium, Lung, Kidney, Liver, Lens (eye), Stomach, Small intestine, Colon, Rectum. Least radiosensitive :- CNS, Muscle, Bone & Cartilage, Connective tissue, Vagina & Uterus, Pancreas.