2.72 Water re-absorption

2.72 understand that water is reabsorbed into the blood from the collecting duct.

When ultrafiltration occurs, too much water is displaced from the blood, so it must be returned into the blood stream, this happens in the Collecting duct.

Water is removed from the filtrate as it travels down the duct to the Pelvic region; the water is then recalculated back into the blood through blood vessels. This is known as Selective reabsorption.