1				2
											3
		4		5
						6
	7										8				9		10		11
						12					13
		14
15
																						16
				17
									18
19																		20
21														22

Across 3. urine is ejected from the bladder and out of the body through the ______________ 4. inflammation of the kidney. 6. located near the hilus, collects the urine flowing from the calyxes. 7. By regulating salt levels through production of an enzyme called ___________ (as well as other substances), the kidneys ensure that blood pressure is regulated. 13. tubes that carry the urine out of each kidney to be stored in the urinary ___________ — a muscular collection sac in the lower abdomen. 18. The kidneys secrete a hormone called ____________ 19. condition in which urine abnormally flows backward (or refluxes) from the bladder into the ureters. 21. urine is transported out of the kidneys through the _____________ 22. ring-like muscle that guards the exit from the bladder to the urethra

Down 1. infection of a part of or throughout the urinary tract, usually caused by bacteria. 2. The center part of the kidney 5. medulla has 10 to 15 fan-shaped structures called __________ 8. fluid filtered from the blood by the glomerulus then travels down a tiny tube-like structure called a ____________ 9. result from the buildup of crystallized salts and minerals such as calcium in the urinary tract. 10. The outer part of the kidney 11. ___________ kidney, where the two kidneys are fused 12. Each of the nephrons contains a filter called the ____________ 14. involves using a machine or other artificial device to remove the excess salts and water and other wastes from the body when the kidneys are unable to perform this function 15. Filtered blood leaves the kidney through the __________ and flows back to the heart. 16. Blood travels to each kidney through the ___________ 17. pigmented blood product that gives urine its yellowish color. 20. a waste product that forms when proteins are broken down. Salts, amino acids, byproducts of bile from the liver, ammonia, and any substances that cannot be reabsorbed into the blood.