1					2
			3							4
					5
6	7
					8
9
														10
					11
	12
						13		14
	15						16
										17

Across 5. thin muscular tube 6. excretes bile pigments 8. comes from the metabolism of nucleotide 9. sac into which nephrons drains 11. comes from the deanimation of amino acids 12. must be excreted to maintain balance of ph and electrolytes 13. elimination of waste products of metabolism in body 15. excretes H2O and Ions 16. lungs excrete it 17. excretes H20 abd C02

Down 1. full until stretch send impulse 2. heme of hb metabolism 3. comes from kidneys 4. comes from the metabolism of muscle cells 7. excretes salt and ions 10. excretes urine 14. lungs and kidneys excrete