Cell division allows for the growing of new cells. With a unicellular organism, cell division would be the cell's way of reproducing or multiplying, in other words, surviving. Within a multicellular organism, cell division is the organism's way of replacing old, damaged, or dead cells. Within multicellular organisms, cell division also aids in growth.
Hypertension can damage the blood vessels in the kidneys causing them not to function properly which then causes the kidneys to stop removing the waste and extra fluids.
