Urine formation majorly takes place in three steps, they are:Glomerular filtrationReabsorptionSecretionSince urine formation is a very important stage of the human body, it is very important to scrutinize the formation of urine. Urine formation must be proper and accurate as it ensures that there is no proper in the kidneys. Along with that, there is one more process called osmoregulation which maintains homeostasis in the body and it facilitates diffusion of solutes and water across the semipermeable membrane to maintain osmotic balance.