The collecting duct - This structure descends towards the renal pelvis and empties urine into the ureter. The cells walls are thicker here so little or no reabsorption takes place., distal convoluted tubule - The absorption of many ions including sodium, chloride and calcium takes place here, Bowman's capsule  - A cup-like sack at the beginning of a nephron that performs the first step in the filtration of blood to form urine. A glomerulus is enclosed in the sac., Loop of Henle - Reabsorb water and sodium chloride from the filtrate. This conserves water for the organism, producing highly concentrated urine., Proximal convoluted tubule - Where water, glucose, amino acids and other substances are reabsorbed back into the bloodstream, Glomerulus - A knot of blood vessels. lets fluid and waste products pass through it; however, it prevents blood cells and large molecules, mostly proteins, from passing. This is where Ultrafiltration takes placeThis is where Ultrafiltration takes place,

Structures of a nephron

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