BIOL - Excretion of Waste Through the Urinary System
Biology, urinary system, waste excretion - IGCSE | IBDP | DSE | GCE | IAL | AP Chemistry
The kidney is a very important organ of the urinary system that produces urine. The two important functions of the kidney are to:
A General Idea of How the Urinary System Removes Waste:
Let's take a closer look at how urine is produced in the kidney:
Each kidney has about 1 million nephrons, which is the functional unit that produces urine.
👇 The structure of nephron 👇
ADH (Anti-diuretic hormone)
The water level in the blood plasma is balanced by a hormone called ADH (anti-diuretic hormone).
ADH increases the reabsorption of water to the bloodstream in the collecting duct.
When the brain detects that there is too less water in the blood:
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