How does radiation affect the human body?
Exposure to very high levels of radiation, such as being close to an atomic blast, can cause acute health effects such as skin burns and acute radiation syndrome (“radiation sickness”).
It can also result in long-term health effects such as cancer and cardiovascular disease..
What types of cells are most sensitive to radiation damage quizlet?
Cells that divide very rapidly (spermatozoa and lymphocytes) are extremely sensitive to radiation because they are in the metaphase stage of mitosis more often. What do the letters “RBE” stand for? Relative biologic effectiveness (RBE) compares the biological effect of a 250 keV x ray with other radiations.
How can you protect yourself from radiation?
Staying inside will reduce your exposure to radiation.Close windows and doors.Take a shower or wipe exposed parts of your body with a damp cloth.Drink bottled water and eat food in sealed containers.
Can radiation create a virus?
Scientists have long known that exposing cells to high doses of ionizing radiation generates mutations by creating double-strand breaks that let in external segments of DNA. These extraneous fragments of DNA can occur in the nucleus, left over from natural processes, such as genomic DNA repair and viral infections.
How does radiation affect the cells?
They have very high levels of chemical reactivity, and therefore generate indiscriminate chemical reactions. Radiation and electrons bombarded by radiation move haphazardly inside the cell, resulting in damage to the various molecules forming the cell. Chromosomal DNA inside the cell nucleus can also be damaged.
What cells are most sensitive to radiation?
Amongst the body cells, the most sensitive are spermatogonia and erythroblasts, epidermal stem cells, gastrointestinal stem cells. The least sensitive are nerve cells and muscle fibers. Very sensitive cells are also oocytes and lymphocytes, although they are resting cells and do not meet the criteria described above.