When water is absorbed through the large intestines, it enters the blood circulatory system. If the osmotic potential of the blood is low, the water is added to the blood to bring its osmotic potential to normal again.
If, however, the water content of blood is already at its optimum, or when the level reaches this optimum, water is removed from the blood when blood flows through kidneys.
The blood moves through the kidneys from where all water is removed. The excess water is removed and the rest is let back into the blood. The excess water is now carried through the ureter to the bladder from where it is removed as urine.
If, however, the water content of blood is already at its optimum, or when the level reaches this optimum, water is removed from the blood when blood flows through kidneys.
The blood moves through the kidneys from where all water is removed. The excess water is removed and the rest is let back into the blood. The excess water is now carried through the ureter to the bladder from where it is removed as urine.