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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).
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Which are the most radiosensitive blood cells?
Immature, undifferentiated, dividing cells, for example: White blood cells and sperm cells.
What happens when cells dont divide when they should?
A tumor will form and cancer will result.
What is a dense mass of abnormal cells called?
A mass of abnormal cells is a tumor. Sometimes this is cancer and sometimes not.
How are tumor cells cells from normal cells?
They divide infinitely without slopping. So they increase in size
What are groups of Cells called?
They are known as Tissues.
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.
Which is radiosensitive tumor?
Lymphoma multiple myeloma seminoma wilms ewings medulloblastoma
How are tumor cells different cells?
Mitosis is not regulated in tumor cells
How are tumor cells different from normal cells?
Cell division is not regulated in tumor cells.
How do maligant tumor cells differ to benige tumor cells?
That a benging tumor does not metastasize.
What makes the tumor cells replicate continuously?
Tumor/Cancer cells replicate uncontrollably because a mutation in their DNA prevents them from initiating Apoptosis, which would kill a damaged or old cell.
Which are the most radiosensitive blood cells?
Immature, undifferentiated, dividing cells, for example: White blood cells and sperm cells.
What is the medical term meaning compression of surrounding cells by the tumor cells?
Mass effect is the term for the compression of surrounding cells by tumor cells.
What makes a tumor?
This is the short story: When there's an error in a cells genome (DNA) regulation, the cell may start replicating uncontrollably. This causes a tumor. Do you want the long story?
What is the medical term meaning tumor of immature bone cells?
Osteosarcoma is the medical term meaning tumor of immature bone cells.
A malignant tumor is a mass of cells that?
A malignant tumor is a mass of cells that invades and distroys healthy tissue.
Can brain tumor cells transit through blood vessels?
Some can, not all. If the tumor contains cells that can it will metastasize.
