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Biological effect begins with the ionization of atoms. The mechanism by which radiation causes damage to human tissue, or any other material, is by ionization of atoms in the material. Ionizing radiation absorbed by human tissue has enough energy to remove electrons from the atoms that make up molecules of the tissue.When the electron that was shared by the two atoms to form a molecular bond is dislodged by ionizing radiation, the bond is broken and thus, the molecule falls apart. This is a basic model for understanding radiation damage.
We consider the chromosomes to be the most critical part of the cell since they contain the genetic information and instructions required for the cell to perform its function and to make copies of itself for reproduction purposes. Also, there are very effective repair mechanisms at work constantly which repair cellular damage - including chromosome damage.
Cells are undamaged by the dose
Cells are damaged, repair the damage and operate normally
Cells are damaged, repair the damage and operate abnormally
Cells die as a result of the damage
Blood-forming organ (Bone marrow) syndrome (>100 rad) is characterized by damage to cells that divide at the most rapid pace (such as bone marrow, the spleen and lymphatic tissue). Symptoms include internal bleeding, fatigue, bacterial infections, and fever.
Gastrointestinal tract syndrome (>1000 rad) is characterized by damage to cells that divide less rapidly (such as the linings of the stomach and intestines). Symptoms include nausea, vomiting, diarrhea, dehydration, electrolytic imbalance, loss of digestion ability, bleeding ulcers, and the symptoms of blood-forming organ syndrome.
Central nervous system syndrome (>5000 rad) is characterized by damage to cells that do not reproduce such as nerve cells. Symptoms include loss of coordination, confusion, coma, convulsions, shock, and the symptoms of the blood forming organ and gastrointestinal tract syndromes. Scientists now have evidence that death under these conditions is not caused by actual radiation damage to the nervous system, but rather from complications caused by internal bleeding, and fluid and pressure build-up on the brain
Originally posted by THEDUDE86
reply to post by muzzleflash
There are different types of radiation. gamma rays Ionize your cells, alpha and beta and x-rays do not do the same damage as gamma rays because of the wavelength size which is so small its able to go through most of the cells in our body ionizing them as they are hit
The good news is, gamma rays are not a concern in this crisis unless your at the emergency site.
You are right that it splits the cell, but melting it is a far fetched statement.
I work in emergency management. I have taken all the classes for radiation and other nuclear incidents and I deal with experts(PHD types) in this all the time.
Originally posted by THEDUDE86
reply to post by muzzleflash
I realize all that, but internal bleeding, and melting your molecules are different.
Originally posted by THEDUDE86
I just feel like melting is not the correct term....melting point is a scientific term that does not apply to what you are talking about now.edit on 8-4-2011 by THEDUDE86 because: (no reason given)
Originally posted by Miraj
reply to post by muzzleflash
No one is saying radiation isn't dangerous (except Ann Coulter?)
There isn't enough radiation reaching the US to cause concern..
Originally posted by Miraj
reply to post by muzzleflash
Ok. So whats the point of this thread?
Average individual background radiation dose: 0.23μSv/h (0.00023mSv/h); 0.17μSv/h for Australians, 0.34μSv/h for Americans[8][4][9]
*(1000 mSv = 1 Sievert)
Highest reported level during Fukushima accident: 1000 mSv/h reported as the level at a pool of water in the turbine room of reactor two
*(1000 mSv = 1 Sievert)
Highest reported level during Fukushima accident: 1000 mSv/h reported as the level at a pool of water in the turbine room of reactor two
Blood-forming organ (Bone marrow) syndrome (>100 rad) is characterized by damage to cells that divide at the most rapid pace (such as bone marrow, the spleen and lymphatic tissue). Symptoms include internal bleeding, fatigue, bacterial infections, and fever.