Final answer:
The glomerulus filters substances from the blood and initiates urine formation in the kidney.
Step-by-step explanation:
The glomerulus is a component of the kidney and its main function is to filter substances from the blood. It is part of the nephron, which is the functional unit of the kidney responsible for urine formation. As blood enters the glomerulus, small molecules such as water, salts, and waste products are filtered out into the kidney tubules, while larger molecules like proteins and red blood cells are retained in the bloodstream.
The filtration process in the glomerulus allows for the removal of harmful substances and the reabsorption of essential substances needed by the body. Once the filtrate enters the kidney tubules, various reabsorption and secretion processes occur to ensure the proper balance of electrolytes, water, and waste products in the body.
In summary, the glomerulus' function is to filter substances from the blood and initiate the process of urine formation in the kidney.
Learn more about Function of the glomerulus