Which of the following compounds can be administered to reduce the absorption of radiation that targets the thyroid?
Commonly known as thyroid blocking, taking potassium iodide (KI)1 before or at the beginning of exposure to radioactive iodine blocks the uptake of radioactive iodine by the thyroid gland, thus reducing exposure of the thyroid to internal radiation.
Which of the following cell types are least sensitive to ionizing radiation damage?
The nerve and muscle cells are the slowest to regenerate and are the least sensitive cells. Cells, like the human body, have a tremendous ability to repair damage.
Which type of nerve agent is most persistent?
VX is the least volatile of the nerve agents, which means that it is the slowest to evaporate from a liquid into a vapor. Therefore, VX is persistent in the environment.
During which post disaster phase do survivors?
Reconstruction phase. The survivors come to realize they will need to solve the problems of rebuilding their own homes, businesses, farms and lives largely by themselves and gradually assume responsibility for the tasks. This phase generally lasts for several years after the disaster.
What causes thyroxine to secrete?
Thyroxine (T4) is produced by the thyroid gland under regulation from the hypothalamus and pituitary gland. The feedback loop signals to the hypothalamus in to release thyrotropin-releasing hormone, which then stimulates the pituitary gland to release the thyroid stimulating hormone.
What cells are least sensitive to radiation?
The least sensitive are nerve cells and muscle fibers. Very sensitive cells are also oocytes and lymphocytes, although they are resting cells and do not meet the criteria described above.
What form of ionizing radiation can penetrate deeply?
Gamma rays have so much penetrating power that several inches of a dense material like lead, or even a few feet of concrete may be required to stop them. Gamma rays can pass completely through the human body; as they pass through, they can cause ionizations that damage tissue and DNA.
What is the first step of self decontamination?
The first step in decontamination is to establish Standard Operating Procedures that minimize contact with waste and thus the potential for contamination.
What form of ionizing radiation can penetrate deeply into body tissue?
The highly penetrating power of gamma rays (and the fact that they have no mass) makes them the most dangerous form of ionizing radiation. Gamma rays are able to pass completely through the human body, leading to systemic damage to tissue and DNA.
What are the causes of radiation burn?
Causes of Radiation Burns. The most common type of radiation burn is caused by exposure to ultraviolet light, most often the sun. Radiation burns can also be caused by radiation therapy, exposure to high frequency microwaves or radio waves, and exposure to nuclear energy.
What is radiotherapy burn?
Radiation burn or radiation dermatitis is a common side effect of external beam radiation therapy to treat some forms of cancer. This type of radiation therapy delivers radiation through a machine that targets cancerous cells. The treatment isn’t painful. But it can make your skin sore, peel, itch or turn red.
What are the long-term effects of radiation burns?
Radiation burns can cause harm to skin and other body tissues, depending on the severity of the burn.
What are radium burns?
Radiation burns are caused by exposure to radiation. Radiation burns can cause harm to skin and other body tissues, depending on the severity of the burn. Radiation burns differ from other types of burns, as the cell structure can be altered as the body responds to the radiation, causing cell mutations and cancer in some cases.