Radiation Proctection
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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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Created by:
J_Proctor