Glomerulus

The glomerulus is a capillary bed found surrounded by the Bowman's capsule[?] of the nephron in the vertebrate kidney. Blood is fed to the glomerulus through the afferent[?] arteriole[?], and empties into the efferent[?] arteriole[?].

The difference in pressure between the afferent arteriole and efferent arteriole results in the process of ultrafiltration[?] where soluble materials in the blood are forced out into the Bowman's capsule forming the filtrate[?] that eventually becomes urine after being processed by the rest of the nephron.