Are blood cells filtered out of the in renal arterioles?

Blood cells are not filtered out of the renal arterioles. Instead, they are filtered out of the renal glomeruli, which are tiny structures in the kidneys that are responsible for filtering waste products from the blood. The glomeruli are lined with small pores that allow water and small molecules to pass through, but they prevent larger molecules, such as blood cells, from passing through. As a result, the blood cells remain in the blood vessels and are not filtered out into the urine.