As it carries blood away from a glomerulus, the efferent arteriole divides and forms the capillary network, which surrounds the rest of the nephron.

The efferent arteriole, after carrying blood away from the glomerulus, divides to form a network of capillaries known as the peritubular capillaries. These capillaries surround the rest of the nephron, which is the functional unit of the kidney responsible for filtering blood and producing urine.

Here are the steps:

1. Blood enters the kidney through the renal artery, which branches off into smaller arterioles.

2. One of these arterioles, the afferent arteriole, leads to the glomerulus, a network of capillaries.

3. Blood is filtered in the glomerulus, and the filtered blood leaves the glomerulus through the efferent arteriole.

4. The efferent arteriole then divides to form the peritubular capillaries, which surround the rest of the nephron.

5. The nephron filters the blood further, removing waste products and excess substances to form urine.

6. The filtered blood, now free of waste, leaves the nephron and eventually exits the kidney through the renal vein. The urine produced in the nephron is collected in the renal pelvis and leaves the kidney through the ureter.