1			2								3			4
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13
			14						15									16
17	18
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		20

Across 1. endocytosis 4. towards heart 5. erythrocytes are made here 9. 1 job of blood 11. seperates left from right 13. 1 phase in the systemic pathway 15. pulmonary artery goes here 17. albuenmin is an example of this 19. relative tissue of circulatory system 20. this tissue is on the outside

Down 2. antibodies 3. controls heartbeat(natural pacemaker) 6. the smooth muscle lies here 7. both veins and arteries have this 8. total number of chambers in the heart 10. total number of sounds your heart makes 12. arteries and veins are... 14. liquid part(90%) 16. this blood vessel has more smooth muscle 18. white blood cells are here