Excretory organs Urinary system Ultrafiltration Glomerula filtrate Blood vessels ADH Appropriate diagrams and their labels 1. 2. 3. 4. 5. 6. 7. What 2 substances are not excreted in urine and why? Which organ produces urea? Where does ultrafiltration take place? What is ultrafiltration? Why is it important to regulate the water content of the blood? How does an artery differ from a vein? Name another organ involved in excretion. Glucose urea protein water Ions nephron outer-cortex blood Renal-vein renal-artery medulla Convoluted-tubule ureter urethra Bladder collecting-duct loop-of-henle glomerulus bowman’s-capsule Urine sweat ADH hypothalamus pituitary-gland hormone thirsty Liver homeostasis dialysis