Across
- 1. an incomplete antigen
- 4. site of gas exchange
- 7. cytoplasmic fragments of megakaryocytes
- 10. type of immunity conferred by activated B cells
- 13. most abundant WBC
- 16. site of cardiac pacemaker cells
- 17. hormone that stimulates RBC formation
- 19. short-lived immunity
- 20. double-walled sac covering heart
- 22. sound created upon AV valve closure
- 23. force exerted by blood against a blood vessel wall
- 25. type of immunity conferred by activated T cells
- 27. heart chamber that receives unoxygenated blood from body
- 29. constriction of blood vessel following injury
- 36. resistance to disease
- 37. largest systemic artery
- 38. engulf then present antigen to other cells
- 40. circulation that provides bloods supply to the heart
- 41. site of B cell maturation
- 42. circuit that carries blood to and from all body tissues
- 44. site of T cell maturation
Down
- 2. pressure exerted by an individual gas
- 3. lymphocyte produced in the thymus
- 4. RBC antigens
- 5. lymphocyte produced in the bone marrow
- 6. an antibody secreting effector cell
- 8. receptors that respond to stretch
- 9. middle layer of the heart
- 11. septum that separates the ventricles
- 12. ventricle filling and relaxation
- 14. non-self protein
- 15. erythrocytes, leukocytes, and platelets
- 18. circuit that carries blood to and from the lungs
- 21. transport vehicle for oxygen
- 24. air in pleural cavity
- 26. cycle one complete heart beat
- 28. blood’s oxygen-carrying capacity too low
- 30. site of exchange between blood and tissue cells
- 31. also known as the voice box
- 32. highly modified, leaky capillaries
- 33. smallest of the arteries
- 34. prevents backflow into left atrium when ventricle contracts
- 35. organ that filters lymph
- 39. device to detect electrical currents through heart
- 43. tunic comprised of smooth muscle cells
- 45. proteins that identify cell as “self”