Urinary System

3. Region where the blood vessels enter and exit the kidney.
4. The outer region of the kidney, surrounding the medulla.
5. A term which means movement of fluids in opposite directions.
6. The toxic by-product of amino acid breakdown which is nonetheless required as a recycled solute.
9. Blood enters the glomerulus through the _____ arteriole.
11. A tangled cluster of blood capillaries where filtration occurs.
12. Procedure that filters the blood of patients without functioning kidneys.
14. Stores urine that has passed through the distal tubule.
18. The apex of the pyramid, where urine exits.
19. The outer tough surface of the kidney.
22. A word which means "pertaining to the kidneys."

1. The act of urinating.
2. Specialized cells which provide filtration slits.
4. The renal pelvis is divided into the major and the minor ____ (singular).
7. Surround the glomerulus (also called Bowman's ____).
8. Removal of penicillin from the blood occurs during tubular _____.
10. The functional unit of a kidney.
13. The inner region of the kidney where the nephron loop is found.
15. The name given to fluid removed from the blood during filtration.
16. Stores urine before it is excreted.
17. Bean-shaped organ found in the retroperitoneal region.
18. The major calyces collect into this structure before joining the ureter.
20. This tube carries urine out of the body.
21. Tube which carries urine from the kidney to the bladder.