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Radiation Proctection

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
show LD is 50/60 (50% for 60 days)  
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show Prodromal, latent period, manifest illness, recovery or death  
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What is the most radio sensitive vital organ system in the human body?   show
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When cells are exposed yo sublethal doses of ionizing radiation, approximately ___________ of radiation induced damage may be repaired over time, and about _______ is irreparable.   show
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The total radiation dose received by a somatic or genetic cell and the dose rate determines what?   show
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show William Herbert Rollins  
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show Increases  
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In the female, the ovarian stem cells does what?   show
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What type of cells develop from a single precursor cell, the pluripotential stem cell?   show
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show Small Intestines  
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A method of dose assesment in which biological markers or effects of radiation exposure are measured and the dose to the organism is inferred from previously established dose effects relationships.   show
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Functions as an ongoing regeneration system for the human body; is relatively radiosensitive   show
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Whole body dose of ionizing radiation that can be lethal to 50% of an exposed population within 30 days   show
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Period during the menstrual cycle when a mature follicle releases an ovum   show
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Specialized, non dividing cells that are relatively radioresistant   show
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show Dermis  
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Form of ARS that occurs when humans receive whole body doses of ionizing radiation ranging from 1 to 10 Gy   show
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show Marshall Islanders  
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An abnormal decrease in white blood corpuscles, usually below 5000/mm   show
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show Decrease  
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Alopecia (Hair loss)   show
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Results when a organ or tissue fails to recover from radiation exposure   show
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Form of ARS that results when the CNS and the cardiovascular system receive ionizing radiation doses of 50 Gy or more   show
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show Deterministic effects  
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Radiation sickness that occurs in humans after whole body dose of ionizing radiation delivered over a short amount of time   show
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show Oocytes  
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show 1920's and 30's  
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show Pluripotential stem cells  
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show Prodromal stage  
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Form of ARS that appears at a threshold dose of approximately 6 Gy   show
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Following a period of about a week, during which non visible symptoms occur, symptoms again become visible during this stage of ARS   show
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Deviation from normal development or growth   show
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The priod after the initial stage of ARS during which no visible effects or symptoms of radiation exposure occurs   show
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show Anemia  
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When biological effects from ionizing radiation demonstrate the existence of a threshold and the severity of the damage increases as a consequence of increased absorbed dose, the events are considered:   show
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Approximately what percent of the human body's surface skin cells is replaced daily by stem cells from an underlying basal layer?   show
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show Karyotype  
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show 400 to 500  
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What are parts of the hematopoietic system?   show
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show Radiodermatitis  
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What measure of lethality may be a more relevant indicator of outcome for humans?   show
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show 1.The amount of body area exposed 2. The quantity of ionizing radiation to which the subject is exposed 3. The specific parts of the body exposed  
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In humans with the GI form of ARS, the part of the body most severely affected is the   show
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show Acute radiation syndrome (ARS)  
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show Radiation induced skin injuries for patients  
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show All were exposed to doses of ionizing radiation sufficient enough to cause ARS in many group members  
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What does not cause early deterministic and somatic effects of radiation?   show
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show  
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show Total body syndrome  
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show Nausea and vomiting  
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show 3-4 Gy  
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Infection, hemorrhage, and cardiovascular collapse are symptoms that can occur as part of ARS during the:   show
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What local tissue will experience consequences from high radiation doses?   show
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show Relatively low doses of gonadal radiation for the patient and for imaging personnel  
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show 1. Hair follicles 2. Sebaceous glands 3. Sweat glands  
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show Contain a repair mechanism inherent in their biochemistry (repair enzymes)  
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The testes of the human male and the ovaries of the female do not respond the same way to irradiation because?   show
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When are human ovaries most sensitive?   show
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show Exposure to high levels of radiation  
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