What is the name of the microscopic cluster of capillaries in Bowman's capsule of the nephron in the kidney?

The microscopic cluster of capillaries in Bowman's capsule of the nephron is known as the glomerulus. This structure plays a critical role in the kidney's function of filtering blood to form urine. The glomerulus is where blood filtration begins, as it allows water, ions, and small molecules to pass from the bloodstream into the Bowman's capsule, while larger molecules, like proteins and blood cells, typically remain in the circulation.

Understanding the function of the glomerulus is essential in comprehending how the kidney regulates fluid balance, electrolytes, and waste removal from the body. Nephrons, which include the glomerulus, are the functional units of the kidney, while the renal tubule and collecting duct are structures involved in the reabsorption and secretion processes that follow initial filtration.