Sodium and water metabolism. As one of the important kidney functions, it regulates water balance within the body either by concentrating or diluting the urine. Sodium is reabsorbed along the entire length of the nephron to a varying degree; very little sodium is lost in the urine.
The mitochondrion (plural mitochondria) is a double membrane-bound organelle found in most eukaryotic cells. The word mitochondrion comes from the Greek Î¼Î¯ÏÎ¿Ï, mitos, i.e. thread, and ÏÎ¿Î½Î´ÏÎ¯Î¿Î½, chondrion, i.e. granule or grain-like.Mitochondria range from 0.5 to 1.0 Î¼m in diameter.ome mitochondrial functions are performed only in specific types of cells. For example, mitochondria in liver cells contain enzymes that allow them to detoxify ammonia, a waste product of protein metabolism. A mutation in the genes regulating any of these functions can result in mitochondrial diseases.
Fat cells have many mitochondria because they store a lot of energy. Muscle cells also have abundant mitochondria that allow them to respond quickly to the need of performing activities. ATP production via mitochondria is done by the process of respiration using oxygen in a process that generates energy.at cells have many mitochondria because they store a lot of energy. Muscle cells also have abundant mitochondria that allow them to respond quickly to the need of performing activities. ATP production via mitochondria is done by the process of respiration using oxygen in a process that generates energy.