Which of the following is the most radiosensitive tissue?
Tissues with highest mitotic activity are highly radiosensitive. The tissues with high radiosensitivity are lymphoid tissue, bone marrow, mucosa of the GIT and germinal tissue. Least radiosensitive tissues are: Bone (least) Brain, muscle and skin Effects of radiation in different tissues: Hematopoietic system: Lymphopenia Thrombocytopenia Bone marrow hypoplasia Vascular system: Thrombosis Ischemic damage Integumentary system Acutely: erythema, edema, blistering Chronic: potential for squamous cell carcinoma Cancers caused by radiation: Acute leukemia Papillary carcinoma Osteogenic carcinoma Ref: Rapid Review Pathology By Edward F. Goljan page 173.
Brain
Bone marrow
Thyroid
Liver