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Rad Bio
Deterministic Effects of Radiation
| Question | Answer |
|---|---|
| What is the threshold dose for the CNS syndrome? | 5000 |
| Which of the 3 acute radiation syndromes is threshold, but not dose dependent for survival time? | GI |
| What is the LD 50/60 for humans estimated to be? | 350 |
| Radiation induced death (LD 50/60) follows a ______ dose-reponse relationship. | Non-linear, threshold |
| The stem cell that prodences lyphocyts, granulocytes, thrombocytes, and erythrocytes is the _______ cell. | Pluripotential |
| The hematologic syndrome requires a dose of: | 200 rad |
| What is the ultimate cause of death during the CNS syndrome? | Elevated fluid levels in the brain |
| What term denotes the time between a lethal radiation exposure until death occurs? | Mean Survival Time |
| the GI syndrome occurs after doses of how many rad? | 1000-5000 |
| In which acute radiation syndrome is the latent period the shortest? | CNS |
| What is the threshold level for the GI syndrome? | 1000 rad |
| What is the minimum amount of radiation to cause epliation? | 300 rad |
| Which of the following whould be immediate symptoms that occur after acute radiation exposure? | Nausea, vomiting |
| What is the principle response of blood to radiation exposure? | Decreased number of all blood cells |
| A minimum dose of _____ rads to the testes will cause a reduction in sperm. | 10 rad |
| What dose is required for permanent sterility for both males and females? | 500 rad |
| What term is used to describe loss of hair due to radiation exposure? | epilation |
| What are some clinical signs and symptoms of the latent stage of the acute radiation syndrome? 1.nausea vomiting 2.diarrhea 3.decreased blood counts 4. none of the above | 4. none |
| What term is used to describe ulceration, necrosis, and loss of skin cells due to radiation exposure? | desquamation |
| Put the following inorder of appearance in the acute radiation syndrom: 1. hemopoietic 2. CNS 3. Prodromal 4. latent 5. GI | 3,4,1,5,2 |
| the term LD 50/60 denotes the radiation dose required to kill: | 50% of the population in 60 days |
| What is the SED50 dose? | 500 Rad |
| A dose of _____ rad to the testes will cause temporary sterility in males. | 200 rad |
| Permanent hair loss can be seen in localized doses of _____ rad. | 700 rad |
| The stem cell of the ovaries multiply during_____. | fetal development |
| The most radiosensitive cells of the hemopoietic system is the: | Lymphocytes |
| What is the minimum whole body dose required for radiation induced lethality? | 200 rad |
| After a whole body dose of 5000 rads, the victim will first experience: | Prodromal symptoms |
| The stage of radiation sickness in which the patient has no symptoms is: | Latent |
| The threshold dose for skin erythema is: | 200 rad |
| The syndrome which is non dose dependent in relation to survival time is: | gastrointestinal |
| Chromosome aberrivations have been observed after doese of: | 10 rad |
Created by:
rieste
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