Quick Answer: Which Organ Is Most Sensitive To Radiation?

Are some people more sensitive to radiation?

Some people are more sensitive to harmful effects of radiation than others.

There are a number of factors that influence an individual’s sensitivity to radiation.

These factors include age, gender, other exposures and genetic factors.

Age – In general, exposed children are more at risk than adults..

Why are rapidly dividing cells more sensitive to radiation?

Tissues that are made up of rapidly dividing cells are similarly radiation-sensitive. … Cells that are fully oxygenated tend to be more sensitive than those that are less well-oxygenated.

What is the first sign of too much radiation?

The initial signs and symptoms of treatable radiation sickness are usually nausea and vomiting. The amount of time between exposure and when these symptoms develop is a clue to how much radiation a person has absorbed.

What types of cells are most sensitive to radiation damage?

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.

What are the symptoms of radiation sickness?

Symptoms of radiation sickness may include:Weakness, fatigue, fainting, confusion.Bleeding from the nose, mouth, gums, and rectum.Bruising, skin burns, open sores on the skin, sloughing of skin.Dehydration.Diarrhea, bloody stool.Fever.Hair loss.Inflammation of exposed areas (redness, tenderness, swelling, bleeding)More items…•

How does radiation kill cells?

How Radiation Therapy Works Against Cancer. At high doses, radiation therapy kills cancer cells or slows their growth by damaging their DNA. Cancer cells whose DNA is damaged beyond repair stop dividing or die. When the damaged cells die, they are broken down and removed by the body.

What organs are affected by radiation?

Let’s do a head-to-toe walk-through to investigate how high doses of radiation can damage the human body.Brain. Nerve cells (neurons) and brain blood vessels can die, leading to seizures.Eyes. Radiation exposure increases the risk of cataracts.Thyroid. … Lungs. … Heart. … GI tract. … Reproductive organs. … Skin.More items…•

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.

Does radiation shorten your life?

chemotherapy, radiation therapy and other cancer treatments cause aging at a genetic and cellular level, prompting DNA to start unraveling and cells to die off sooner than normal. bone marrow transplant recipients are eight times more likely to become frail than their healthy siblings.