Which cells have a low sensitivity to radiation?

Which cells have a low sensitivity to radiation?

Amongst the body cells, the most sensitive are spermatogonia and erythroblasts, epidermal stem cells, gastrointestinal stem cells. The least sensitive are nerve cells and muscle fibers.

Which blood cell is most radiosensitive?

However, similar to T cells, NK and B cells are much more radiosensitive than monocytes, macrophages and iDCs (Figs. 1a and S1b).

What part of the body is most sensitive to radiation?

Radiation in high doses can be dangerous no matter what, but some parts of the body are more sensitive than others. The most sensitive parts of the human body are the lymphoid organs, bone marrow, blood, testes, ovaries and intestines, according to the Collaboration for Nondestructive Testing[1].

What tissue is most resistant to radiation?

Rapidly proliferating non-differentiated cells are the most radiosensitive. Well known representatives of this class of cells are the stem cells of the hematopoietic tissues and the cells of the intestinal crypts. The differentiated fixed postmitotic cells are the most radioresistant.

What is radiosensitive cells?

Radiosensitivity is the relative susceptibility of cells, tissues, organs, organisms, or other substances to the injurious action of radiation. The most radio-sensitive cells are those which: have a high division rate. have a high metabolic rate.

Are parenchymal cells radiosensitive?

The parenchymal cells of the liver, including hepatocellular and bile duct epithelium, are relatively radioresistant since these cells turn over slowly.

Which types of cells are more sensitive to radiation quizlet?

stem cells are more sensitive to radiation than mature cells.

Are platelets radiosensitive?

Circulating platelets, unlike megakaryocytes, are highly radioresistant.

Which is the most sensitive organ in our body?

skin
The skin is the most sensitive organ in our body which responds to touch, temperature etc. Skin is the largest organ of our body.

What makes a cell more radiosensitive?

Actively dividing cells that are less differentiated tend to show higher radiosensitivity. For example, hematopoietic stem cells in bone marrow are differentiated into various blood cells, while dividing actively.

Are highly specialized cells radiosensitive?

Rapidly dividing cells or cells that have a potential for rapid division are more radiosensitive than cell that do not divide; cells that are undifferentiated are more radiosensitive than those that are highly specialized; finally, within the same cell families, the immature forms, which are rapidly dividing, are more …

Is bone marrow sensitive to radiation?

The cells in your bone marrow are sensitive to radiation therapy. The number of WBCs, RBCs, and platelets in your body may decrease, depending on the part of your body being treated and the dosage of radiation.

Which are the most radio-sensitive cells?

The most radio-sensitive cells are those which: 1 have a high division rate 2 have a high metabolic rate 3 are of a non-specialized type 4 are well nourished More

What is meant by radiosensitivity?

Radiosensitivity is the relative susceptibility of cells, tissues, organs to the harmful action of radiation. It denotes the level of harm which radiation can cause to certain types of cells in the body. We have divided into High, Intermediate and Low Radiosensitive…

Why are lymphocytes so sensitive to radiation?

Very sensitive cells are also oocytes and lymphocytes, although they are resting cells and do not meet the criteria described above. The reasons for their sensitivity are not clear. There also appears to be a genetic basis for the varied vulnerability of cells to ionizing radiation.

Which cells are most at risk from radiation?

In general, it has been found that cell radiosensitivity is directly proportional to the rate of cell division and inversely proportional to the degree of cell differentiation. In short, this means that actively dividing cells or those not fully mature are most at risk from radiation