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