What type of cells make up the visceral capillaries of the glomerulus?

The visceral layer of the glomerulus is indeed primarily made up of podocytes. These specialized epithelial cells wrap around the glomerular capillaries and play a crucial role in the filtration process of the kidneys. Podocytes have unique foot-like extensions called pedicels, which interdigitate and create filtration slits, allowing for the selective passage of substances from the blood into the urinary space while preventing larger molecules such as proteins from escaping.

In the context of the glomerulus, podocytes are essential for ensuring that the filtration barrier remains intact and functions correctly. Their structure and arrangement directly contribute to the kidney's ability to filter blood effectively, making their role vital in maintaining kidney health and proper fluid balance in the body.