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Date : 1990-03-05

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NRC Backgrounder on Biological Effects of Radiation ~ For low levels of exposure the biological effects are so small they may not be detected The body is able to repair damage from radiation chemicals and other hazards Living cells exposed to radiation could 1 repair themselves leaving no damage 2 die and be replaced much like millions of body cells do every day or 3 incorrectly repair themselves resulting in a biophysical change

216 Biological Effects of Radiation – Chemistry ~ Biological Effects of Exposure to Radiation Radiation can harm either the whole body somatic damage or eggs and sperm genetic damage Its effects are more pronounced in cells that reproduce rapidly such as the stomach lining hair follicles bone marrow and embryos

Biological Effects of Radiation Nuclear Power ~ Biological effects of radiation and their consequences depends strongly on the level of dose rate obtained Dose rate is a measure of radiation dose intensity or strength Dose rate is a measure of radiation dose intensity or strength

Biological Effects of Radiation Teach Nuclear ~ Biological Effects of Radiation Energy emitted from a source is generally referred to as radiation Examples include heat or light from the sun microwaves from an oven X rays from an xray tube and gamma rays from radioactive elements

Biological Effects of Radiation Chemistry ~ Biological Effects of Exposure to Radiation Radiation can harm either the whole body somatic damage or eggs and sperm genetic damage Its effects are more pronounced in cells that reproduce rapidly such as the stomach lining hair follicles bone marrow and embryos

Biological Effects ~ Biological Effects The occurrence of particular health effects from exposure to ionizing radiation is a complicated function of numerous factors including Type of radiation involved All kinds of ionizing radiation can produce health effects

Biological Effects of Radiation ~ Animal data shows that radiation does cause genetic changes but they are much less common than spontaneous mutations Acute radiation at moderate doses results in a negligible adverse effect on subsequent generation No direct evidence of human effects

Biological effects of radiation SlideShare ~ BIOLOGICAL EFFECTS OF RADIATION Definition The harmful effects caused to human being and other living beings due to their exposure to radiation is called as biological effects of radiation 2 4 CELL 3 The smallest unit of body is called a cell Cells of different organs have different shapes sizes functions The most sensitive part of the cell is the NUCLEUS

Occupational Exposure Biological effects and risk ~ Early effects occur when the radiation dose is large enough to cause extensive biological damage to cells so that large numbers of cells are killed For early effects to occur this radiation dose must be received within a short time period This type of dose is called an acute dose or acute exposure

Radiation Health Effects Radiation Protection US EPA ~ Radiation Health Effects Acute Radiation Syndrome from Large Exposures Radiation Exposure and Cancer Risk Exposure to lowlevels of radiation does not cause Exposure Pathways Understanding the type of radiation received Sensitive Populations Children and fetuses are