please help solve the cross-word puzzle thank you

Down: 1. Across: small blood vessels that supply the walls of 7. Muscular blood vessel that carries blood larger arteries and veins (2 words, 0 spaces) 2 . Red blood cell away from the heart 3 . 9. Blood vessel that returns blood back to the secreted by NK cells when an enemy cell is heart present (plural) 4. Fluid portion of blood 12. Region of the molecule that is recognized 5 . by antibodies Rhythmic expansion of artery as a result of 13. point of convergence between 2 blood heart contraction that can be felt in arteries vessels other than capillaries 12 close to skin surface 14. type of capillary possessing patches of 6 a small irregularly shaped blood vessel filtration pores found in certain organs, especially the liver 15. Smallest blood vessel whose walls are only B vasodilation and vasoconstriction occur due one cell thick to sympathetic input to this vessel tunic 18. secreted by cells infected with viruses, 15 10. Relaxing of smooth muscle in blood vessel alerting neighboring cells and protecting resulting in vessel widening them from becoming infected 11. White blood cell 20. Protein produced in the body in response to 20 16. Tiny artery the presence of antigens or foreign bodies 17. hormone secreted by heart that decreases 21. substance that causes a fever blood pressure (acronym) 22. Narrowing of blood vessel 19. substance secreted by endothelial cells that 24. shock resulting from hemorrhage, severe acts as a platelet repellent burns, or dehydration 23 23. Helper T (TH) cells recognize antigens when 25. Prevent backward flow of blood (plural) 24 they are bound to this protein (acronym) 26. High blood pressure 27. responsible for humoral immunity (2 words, 28. System of vessels carrying lymph. Also unhyphenated) involved in immunity 25 . cells responsible for cell-mediated 30. origin of the thoracic duct in most immunity (2 words, unhyphenated) individuals (2 words, 0 spaces) 27 28 29 30