A nephron is composed of the filtering unit and highly convoluted ducts. The filtering unit is called glomerular apparatus. It is composed of a cup-shaped structure called Bowman’s capsule. There is a tuft of capillaries inside Bowman’s capsule. This tuft of capillaries is called glomerulus. The renal artery sends blood to glomerulus and renal vein collects blood from glomerulus. The glomerulus is followed by highly convoluted tubule which is followed by collecting duct.