Question

In which step of urine formation does excess of water, urea, glucose and amino acids are reabsorbed?​

Answer 1

Answer: Selective reabsorption​

• Reabsorption is the process that absorbs necessary nutrients from the glomerular filtrate into the blood.​

• The glomerulus filters water and small solutes out of the bloodstream. ​

• The resulting filtrate contains waste, but also other substances the body needs like essential ions, glucose, amino acids, and smaller proteins. ​

• Thus, selective reabsorption help concentrates the filtrate to form urine.​

• When the filtrate exits the glomerulus, it flows into a duct in the nephron called the renal tubule. ​

• As it moves, the needed substances and some water and urea are reabsorbed through the tube wall into adjacent capillaries.​