The fluid that moves from glomerular capillaries into Bowman's capsule is called .

The fluid that moves from the glomerular capillaries into Bowman's capsule is called glomerular filtrate. This process is part of the renal filtration in the kidneys. During filtration, blood enters the glomerulus, a network of tiny capillaries. The pressure in these capillaries causes water and various solutes, including ions, glucose, amino acids, and waste products, to be filtered out of the blood through the capillary walls into Bowman's capsule. This initial filtrate is relatively free of cells and large proteins due to the selective permeability of the glomerular membrane. Once in Bowman's capsule, the glomerular filtrate moves on to the renal tubules, where further processes of reabsorption and secretion occur to form urine.