Across
- 2. the circuit of blood flow in the right side of the heart, contains blood low in oxygen, trasnports blood to and from the lungs
- 3. the inner lining of blood vessels consisting of simple squamous epithelium
- 5. the diameter of the lumen of an artery narrows, reducing blood flow
- 6. a pump that sets up a pressure gradient so blood will flow through vessels
- 10. the smaller and more thin-walled chamber of the heart
- 14. the body's main artery, the one that deals with the highest pressure
- 15. the hollow interior of blood vessels through which blood flows
- 17. capillaries merge to form these, the smallest kind of vein
- 18. heart muscle contraction
- 19. this separates the two halves of the heart
- 22. lymph flows through this type of vessel
- 23. occurs when the wall of an artery is weakened and swells outward, leading to bursted artery or blood clots
- 26. the system is composed of blood vessels and the heart
- 28. thick, muscular vessels that carry blood away from the heart to body tissues
- 29. the largest lymphoid organ, responsible for clearing blood of microorganisms and old RBCs and platelets
- 30. the thin lining of the cavities of the heart, reduces resistance to blood flow through the heart
- 32. the thick, fibrous sac that holds the heart
- 33. parasites block lymphatic vessels, preventing the return of fluid to blood, results in severe swelling
- 34. the larger and more muscular chamber of the heart
- 35. heart muscle relaxation
- 36. the circuit of blood flow in the left side of the heart, contains oxygen-rich blood, transports blood to and from body tissues
Down
- 1. the sinoatrial (SA) node is a natural one of these
- 4. the fluid of the lymphatic system identical to interstitial fluid
- 7. these valves separate the atria from the ventricles (tricuspid and bicuspid)
- 8. the irregular contraction of ventricles or atria
- 9. this gland plays a role in the maturation of certain lymphocytes
- 11. these vessels carry blood back to the heart and serve as reservoirs for blood volume
- 12. lymph ____ are bean-shaped structures which filter lymph as it flows through them
- 13. pressure wave created by the alternate expansion and contraction of arteries
- 16. this circulation nourishes the heart muscle, consists of arteries that branch off the aorta and veins that flow into the right atrium
- 19. valves these separate the ventricles from the exit vessels (aortic and pulmonary)
- 20. microscopic blood vessels connecting arterioles and venules, site of exchange of materials between blood and body cells
- 21. used to make a recording of the electrical events associated with the heartbeat
- 24. the wall of the heart, made of mostly cardiac muscle tissue
- 25. these prevent the backflow of blood in veins
- 27. the diameter of the lumen of an artery increases, increasing blood flow
- 31. the smallest arteries, the prime controllers of blood pressure