The kidneys are filters
The basic unit of the kidneys is called the nephron.
![What Do Our Amazing Kidneys Do? 1 3D Illustration of the structure of a nephron, the basic structural and functional unit of the kidneys](https://cdn-62b618b2c1ac18076cc875bf.closte.com/wp-content/uploads/2021/02/glomeruli-1024x963.jpeg)
The glomerulus is the nephron’s filter
This is where the kidney filters waste in the blood into the urine.
Glomeruli is plural for glomerulus
The main job of the kidneys is to clean the blood. Blood goes into the kidney, and urine comes out of it as it passes through the individual glomeruli.
There are 1 million glomeruli in each kidney
![What Do Our Amazing Kidneys Do? 2 Urine Production in Kidney](https://cdn-62b618b2c1ac18076cc875bf.closte.com/wp-content/uploads/2021/02/kidney-glomerulus-1024x1024.jpeg)