Which organ is the most susceptible to radiation damage and why?

For example, since the blood forming cells were one of the most sensitive cells due to their rapid regeneration rate, the blood forming organs are one of the most sensitive organs to radiation. Muscle and nerve cells were relatively insensitive to radiation, and therefore, so are the muscles and the brain.

What are 5 harmful effects of radiation?

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Here are a few common health effects or harmful effects of radiation on the human body.
  • Hair. Loss of hair fall occurs when exposure to radiation is higher than 200 rems.
  • Heart and Brain. Intense exposure to radiation from 1000 to 5000 rems will affect the functioning of the heart. …
  • Thyroid. …
  • Blood System. …
  • Reproductive Tract.

What is the most sensitive organ?

  • The skin is our body’s most sensitive organ.
  • The skin is the largest organ of the body, made up of water, nutrients, lipids, and mineral deposits.
  • The skin tries to defend you against pathogens and regulates your body temperature.
  • The skin nerve endings help us to feel heat and cold.

What organ is sensitive to radiation?

As a result of these epidemiological studies, it was found that the mammary gland, skin, and colon, etc. are tissues and organs that are easily affected by radiation and develop cancer.

What are the five sensitive organs?

Sense organs are the specialized organs composed of sensory neurons, which help us to perceive and respond to our surroundings. There are five sense organs – eyes, ears, nose, tongue, and skin.

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What are the 3 most sensitive parts of the body?

The ends of your fingers are more sensitive to pain than almost any other part of the body, according to an Annals of Neurology study. That’s why tiny injuries like paper cuts and finger pricks can cause a grown man to wince.
  • Your shin. …
  • The arch of your foot. …
  • The front and back of your knee. …
  • Your funny bone.

Which part of human body is first highly affected by nuclear radiation?

Answer and Explanation: Nuclear radiations can affect the cells and organs of the body that are continuously producing new cells. Bone marrow is one of the body tissues capable of giving rise to new cells; therefore, it is affected by radiation.

Which organ system would most likely suffer late effects of radiation?

Ionizing radiation particles have in common the physical ability to generate free radicals that may cause direct or indirect DNA damage, but may also provide a source of metabolic stress to which the central nervous system (CNS) is particularly susceptible as compared to other tissue types

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Which tissue is the most vulnerable to radiation damage?

The tissues most affected by radiation are those that undergo rapid replacement, such as bone marrow, the lining of the gastrointestinal tract, and skin. Slower-growing tissues, such as those of the brain and liver, require either high doses of radiation or prolonged exposure before they show symptoms of degeneration.

What organs are most sensitive to radiation?

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The most radiation-sensitive organs include the hematopoietic system [4], the gastrointestinal (GI) system [5], skin [6, 7], vascular system [8, 9], reproductive system, and brain [10–12].

What organs does radiation affect?

In rare cases, radiation can cause more severe and permanent side effects such as damage to the lungs, heart, bowel, bladder or other organs. There is also a small risk that the radiation treatment may actually cause, years later, a new cancer.

What age is more sensitive for radiation?

All these findings suggest that the radiation sensitivity, measured in terms of carcinogenic events, increases with age among adults after age of 40–45.

What is the most fragile organ in the body?

We must remember that the most delicate organ in the human body is the brain. Brain is one of the largest and most complex organs of the human body and is made up of more than 100 billion nerves. Brain controls speech, thought, memory, movement and helps in the functioning of many organs in the human body.

Which organ is most radiosensitive?

The digestive tract is among the most radiosensitive organs in the body and its function, which is partly regulated by gastrointestinal (GI) peptides, can be affected by radiation exposure.

What is the number one cause of radiation?

By far the largest source of natural radiation exposure comes from varying amounts of uranium and thorium in the soil around the world. The radiation exposure due to cosmic rays is very dependent on altitude, and slightly on latitude: people who travel by air, thereby, increase their exposure to radiation.

Which organ is least affected by radiation?

On the other hand, nerve tissues and muscle tissues, which no longer undergo cell division at the adult stage, are known to be resistant to radiation.

What tissue has the least radiation sensitivity?

The least sensitive cells are the muscle fibers and the nerve cells. The very sensitive cells are oocytes and lymphocytes. It is the rate at which energy is transferred from ionizing radiation to soft tissue.

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Which human organ is least susceptible to harmful radiation?

The mature brain and nervous system are relatively resistant to radiation injury, but the developing brain is radiosensitive to damage (see below).

Which radiation poses the highest risk to humans?

Gamma rays are the most harmful external hazard. Beta particles can partially penetrate skin, causing “beta burns”. Alpha particles cannot penetrate intact skin. Gamma and x-rays can pass through a person damaging cells in their path.

What has the highest sensitivity 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.

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What cancers are most sensitive to radiation?

Two examples of highly radiosensitive cancers are leukemia (cancer of the blood cells) and lymphoma (cancer of the lymphatic system). Radiation therapy is most effective when a tumor is contained, easily accessible, and located away from major organs of the body.

What does radiation do to your insides?

Radiation can damage the DNA in our cells. High doses of radiation can cause Acute Radiation Syndrome (ARS) or Cutaneous Radiation Injuries (CRI). High doses of radiation could also lead to cancer later in life.

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Which cancers do not respond to radiotherapy?

Leukemias and lymphomas, while exceedingly radiosensitive, are not readily radiocurable. This article discusses recent progress in radiotherapy and other complementary treatments, including malignant lymphomas of the stomach, head and neck cancer, and lung cancer, with special emphasis on treatment success and QOL.