The primary kidney is an organ of the urinary system of humans and animals that is involved in the formation of primary urine. In a child’s body, it performs a special function - the formation of nephrons, which, as the human kidney develops, are replaced by nephrons - specialized cells responsible for cleaning the blood from metabolic end products. In both adults and children, this part of waste elimination works only at the first stage of reabsorption - due to the cell membranes of the excretory organs - and plays an important role in human anatomy.
The primary kidney is formed already in the fourth week of the embryo’s life, and after 2 months the site of follicle formation is formed. Each of them, after several weeks, will occupy one of the nephrons. The number of emerging intrapolar elements is growing every week. In six months of development, everything grows to its usual appearance. The human kidney is part of the body’s urinary apparatus and controls the functioning of the blood supply to various organs. Its task is to cleanse the blood of residual waste products and remove them