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What is a reoxygenated blood?
the phenomenon in which hypoxic (and thus radioresistant) tumor cells become more exposed to oxygen (and thus more radiosensitive) by coming into closer proximity to capillaries after death and loss of other tumor cells due to previous irradiation.
What makes tumor cells radiosensitive?
Simply: tumor cells tend to be more radiosensitive because they spend more time on average undergoing uncontrolled mitosis than normal cells. Since mitosis is the most sensitive phase of the cell cycle (phase through which the cell is most easily lethally damaged by radiation), their risk is increased. On another note, depending on which genes are causing the cell to become cancerous, certain blockers that would prevent a cell whose DNA had been damaged by radiation might not stop that cell from moving into mitosis, failing, and committing apoptosis (preprogrammed cell death).
Which phase of cell cycle is most radiosensitive?
Metaphase
What area of the eye is the most radiosensitive?
lens cataracts could develop from damage to the lens.
Is brain a most radiosensitive tissue?
The brain is not considered the most radiosensitive tissue in the body; instead, it has a relatively low sensitivity to radiation compared to other tissues, such as bone marrow or the gastrointestinal tract. The central nervous system, particularly neurons, has limited capacity for regeneration, which can make damage from radiation more critical. However, glial cells, which support neurons, can be more affected by radiation. Overall, while the brain can be impacted by radiation exposure, it is not the most radiosensitive tissue.
What is the difference from a hard tumor or a soft tumor?
A hard tumor is not a tumor
Why is erythroblasts is the most radiosensitive?
Erythroblasts are highly radiosensitive because they are rapidly dividing cells with a high metabolic rate, making them more susceptible to damage caused by ionizing radiation. This high sensitivity is due to the DNA synthesis and mitotic activity happening in these cells, which can be disrupted by exposure to radiation, leading to cell death or malfunction.
Which is the most radiosensitive structure in human body?
The bone marrow is considered the most radiosensitive structure in the human body because it contains blood-forming stem cells that divide rapidly and are sensitive to radiation damage. Impairment of bone marrow function can lead to decreased blood cell production and increased susceptibility to infections and bleeding.
Is Wilms' tumor malignant?
Wilms' tumor is a type of malignant tumor
Which are the most radiosensitive blood cells?
Immature, undifferentiated, dividing cells, for example: White blood cells and sperm cells.
Can a tumor look cancerous or not?
where is the tumor
Can a tumor have a heartbeat?
A tumor does not have a heart.
