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Mod 6 Chpt.5

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QuestionAnswer
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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