Question

What are the main process of urine formation?

Answer 1

Urine formation includes glomerular filteration (ultra filteration) selective reabsorption and tubular secretion that takes place in different partes of the nephron.
Glomerular filteration involves the filteration of blood, which is carried out by glomeruius.
Selective reabsorption is the absorption of filtrate through renal tubules either actively or passively Tubular secretion involves secrtretion through tubular cells in urine in order to maintain ionic and acid base balance fo body fluids.