Across
- 4. hormone that regulates the production of RBCs
- 6. principal phagocytic cells in the blood
- 10. protein made by the immune system in response to foreign substances
- 14. contraction of the heart muscle
- 17. colloquial term for myocardial infarction
- 19. permits diffusion between blood and interstitial fluids
- 21. double-sided pump that establishes blood pressure
- 23. stem cells that make other blood cells
- 24. relaxation of the heart muscle
- 25. distributes blood around the body
Down
- 1. an immune response against bacteria and trauma
- 2. another term for platelets
- 3. returns blood from the capillaries to the heart
- 5. type of circulatory system found in Arthropods and Mollusks
- 7. device that records the electrical signals in the heart
- 8. first heart sound
- 9. type of circulatory system found in Nemertea and Annelids
- 11. type of stroke that happens when clotting occurs in the brain
- 12. refers to the iron-porphyrin ring of hemoglobin
- 13. also known as the right atrioventricular valve
- 15. the heart’s natural pacemaker
- 16. amoeba-like cells capable of independent movement
- 18. animals with a three systemic circuit
- 20. agranular leukocytes that are specialized to produce antibodies
- 22. where the hemolymph re-enters the blood