1. THE EXCRETORY SYSTEM Controlling the Internal Environment

2. Gross Anatomy of System Pair of kidneys –Retroperitoneal Pair of ureters Urinary bladder Urethra

3. Gross Anatomy

4. Location of Kidneys Retroperitoneal

5. Retroperitoneal Location

6. The Kidney Cortex Medulla Calyx Pelvis Ureter Hilum Papilla Pyramid Column

7. Functions of Excretory System Regulate body fluids –Volume, pH, composition Remove metabolic wastes from blood Control rate of RBC formation Regulate blood pressure Regulate absorption of calcium

8. Nephron Collecting duct DCT PCT Ascending tubule Descending Tubule Bowman’s capsule Glomerulus Vasa recti

9. The Blood Supply to the Kidney

10. Renal Corpuscle

12. Podocyte and the Filtration Process

13. Renal Corpuscle

14. Function of Renal Corpuscle Bowman’s capsule Glomerulus –Filtration of blood Water Electrolytes Glucose Urea

15. Filtration Slits

16. Nephron

17. Tubules Distal Tubule Proximal Tubule

18. Function of Tubules Reabsorption of glucose –Proximal convoluted tubule Reabsorption of water –PCT, descending tubule, collecting duct Reabsorption of salts –PCT, ascending tubule, distal con. tub. Reabsorption of urea –PCT, collecting duct

19. Collecting Ducts Cuboidal Epithelium lining ducts

20. Nepron with Vasa Recta

21. Function of Tubules Reabsorption of glucose –Proximal convoluted tubule Reabsorption of water –PCT, descending tubule, collecting duct Reabsorption of salts –PCT, ascending tubule, distal con. tub. Reabsorption of urea –PCT, collecting duct