What does the mitotic index have to do with the speed of cell division?

What is the mitotic index used for?

The mitotic index (percentage of cells in mitosis at any time) provides a measure of the capacity of cells to divide and of the rate of cell division. It is used to identify the sites of growth within a tissue and to determine which cell types are dividing.

What is the mitotic index and what does it indicate?

The mitotic index is a measure of cellular proliferation. It is defined as the percentage of cells undergoing mitosis in a given population of cells.

What causes fast cell division?

Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.

What affects the speed of mitosis?

Growth & Repair

The rate of mitosis must increase in order to produce these new cells. Similarly the rate of mitosis also increases during periods of growth, such as our development in the womb, childhood and puberty. In pants there is also much higher rates of mitosis during germination and growth.

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What is mitotic cell index?

Listen to pronunciation. (my-TAH-tik IN-dex) In a population of cells, the ratio of the number of cells undergoing mitosis (cell division) to the number of cells not undergoing mitosis.

What does mitotic activity mean?

Listen to pronunciation. (my-TAH-tik ak-TIH-vih-tee) Having to do with the presence of dividing (proliferating) cells. Cancer tissue generally has more mitotic activity than normal tissues.

What would you expect to happen to the mitotic index of a population of cells that loses the ability to divide as they mature?

What would happen to the mitotic index to a population of cells that mature? The mitotic index would drop as the loss of their ability to divide will result in a smaller ratio of cells in mitosis to overall cells.

What is considered a normal mitotic index?

less than 1 per square millimeter. 1 to 4 per square millimeter.

What are fast dividing cell?

Still, some normal cells do divide quickly, including cells in hair follicles, nails, the mouth, digestive tract, and bone marrow (bone marrow makes blood cells). Chemotherapy also can unintentionally harm these other types of rapidly dividing cells, possibly causing chemotherapy side effects.

Which type of cells divide faster?

Basal cells divide faster than needed to replenish the cells being shed, and with each division both of the two newly formed cells will often retain the capacity to divide, leading to an increased number of dividing cells.

What happens if cell division is too slow?

But cell division is not limitless: on average, human cells can divide only about 50 to 70 times. Afterwards, cells will enter a senescence phase when they no longer divide. At this point, the cells may die, or stay in the body as malfunctioning cells. This causes our bodies to deteriorate and age.

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