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Mod 6 Chpt.5
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| Question | Answer |
|---|---|
| As low as reasonably achievable: Adopted as a culture and attitude of professionals who work with ionizing radiation to minimize radiation exposure and risk. | ALARA |
| Observable adverse biological effects caused by radiation exposure. The severity of change in tissues depends on the radiation dose. | Deterministic (non-stochastic) effect |
| States that cell damage results when ionizing radiation directly hits critical areas within the cell. | Direct theory |
| The radiation dose received per unit of time. | Dose rate |
| Graph produced when radiation dose and the resultant biological response are plotted. | Dose-response curve |
| The cells contained within the testes and ovaries, containing the genes. | Genetic cells |
| Radiation effects that are passed on to future generations. | Genetic effects |
| States that cell damage results indirectly when x-rays cause the formation of toxins in the cell such as hydrogen peroxide. Toxins in turn can cause the cell damage. | Indirect theory |
| The exposure of an object or a person to radiation. Applies to radiations of various wavelengths, such as infrared rays, ultraviolet rays, x-rays, and gamma rays. | Irradiation |
| The formation of ion pairs. | Ionization |
| States that "the radiosensitivity of cells and tissues is directly proportional to their reproductive capacity and inversely proportional to their degree of differentiation." | Law of B and T |
| The amount of radiation that is sufficient to cause the death of an organism. | Lethal dose (LD) |
| A graph showing the relationship between the dose of exposure and the response of the tissues, indicating that any amount of radiation, no matter how small, has the potential to cause a biological response. | Non-threshold dose-response cure |
| Refers to a substance or tissue that is not easily injured by ionizing radiation. | Radioresistant |
| Refers to a substance or tissue that is relatively susceptible to injury by ionizing radiation. | Radiosensitive |
| Any body cells except the reproductive cells. | Somatic cells |
| When radiation affects all body cells except the reproductive cells. | Somatic effect |
| When a biological response is based on the probability of occurrence rather than the severity of the change. | Stochastic effect |
| A graph showing the relationship between the dose of exposure and the response of the tissues, indicating that there is a "threshold" amount of radiation, below wich no biological response would be expected. | Threshold dose respond curve |
| Following exposure to radiation, injury that results in damage that is not repaired during the recovery period. May give rise to later long-term effects of radiation exposure. | Irreparable injury |
Created by:
mgarrett
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