Which normal cell would have the highest mitotic index?
Skin cells because they need to get replaced the most often. Which type of tissue would have a higher mitotic index, normal tissue or cancerous tissue? Cancerous tissue would have a higher mitotic index because the cells are constantly dividing.
What has a higher mitotic index?
An elevated mitotic index indicates more cells are dividing. In cancer cells, the mitotic index may be elevated compared to normal growth of tissues or cellular repair of the site of an injury.
What has a higher mitotic index normal cells or cancerous cells?
Mitotic index is lower in patient tumors than tumor cell lines and xenografts.
Which healthy tissues have higher mitotic indices than others and why?
Skin cells, muscle cells, intestinal lining and stomach cells, and some others, have naturally higher mitotic indexes due to the need of more replication.
What is mitotic index What is its significance?
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 a high mitotic rate?
The higher the mitotic count, the more likely the tumor is to have metastasized (spread). The logic is that the more cells are dividing, the more likely they will invade the blood or lymphatic vessels and thus spread around the body.
What is mitotic index a level biology?
mitotic index = number of cells with visible chromosomes ÷ total number of cells.
What affects the mitotic index?
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.
What are the mitotic figures?
A mitotic figure is a cell that is in the process of dividing to create two new cells. … Mitotic figures are easy to see because the genetic material inside the nucleus changes colour and shape before the cell divides.
Why is the mitotic index less than 100?
Mitotic index decreases with increasing distance from root tip. That means gradual decrease in cell division as it moves from the zone of cell division to the zone of cell elongation.
What is mitotic index and how do you calculate it?
The mitotic index is a measure of the fraction of cells undergoing mitosis. It is calculated by dividing the total cells undergoing mitosis by the total cells visible. The cells undergoing mitosis are identified by counting the cells with visible chromosomes.