Across
- 4. transmit the electrical signal down the septum.
- 5. sends a signal for the rest of the heart when to contract.
- 6. have a visibly smooth appearance.
- 9. prevents back flow of blood back to the right atrium.
- 18. have noticeably grainy appearance.
- 19. pumps blood from the lungs into the left ventricle.
- 23. complement poke holes in red blood cells causing them to burst and release hemoglobin.
- 27. prevents back flow of blood back into the left ventricle and has three flaps.
- 29. branch off from the aorta as it leaves the heart.
- 31. is the part of the aorta that heads down.
- 32. an involuntary contraction of damaged arteries or arterioles.
- 33. are involved in allergic reactions.
- 34. can bind readily to oxygen and carbon dioxide.
- 37. is where all the veins from the head merge together.
- 39. is a hairpin loop in the aorta that wraps around the pulmonary veins and heads downwards.
- 40. pumps blood to the body.
Down
- 1. develop antibodies and attack bacteria.
- 2. prevents back flow of blood back into the right ventricle.
- 3. when platelets stick to each other release a mixture of chemicals.
- 7. cause the ventricles contract.
- 8. prevents back flow of blood into the left atrium.
- 10. caused by a missing clotting factor.
- 11. carries a signal from the pacemaker to the ventricles.
- 12. is where all the veins from the lower merge together.
- 13. a series of events that cause the blood to thicken into a gel-like consistency.
- 14. carry oxygen rich blood to the heart from the lungs.
- 15. are named for rhesus monkeys.
- 16. pumps blood to the right ventricle.
- 17. help the blood to clot at wounds.
- 20. carry oxygen poor blood back to the lungs.
- 21. can consume bacteria by phagocytosis.
- 22. attack and destroy invading pathogens.
- 24. in the bone marrow make blood cells.
- 25. increase allergic and inflammatory responses.
- 26. carry oxygen and carbon dioxide.
- 28. can consume bacteria by phagocytosis.
- 30. pumps blood to the lungs.
- 35. the main artery in the body.
- 36. is the wall that separates the ventricles.
- 38. the bottom of the heart that forms a point.