Across
- 2. contraction of heart muscle
- 5. smallest arteries; control flow into capillary beds via vasodilation and constriction
- 8. generates impulses about 75 times/minute
- 10. smallest blood vessels
- 11. carry blood away from the heart
- 12. heart rate less than 60 beats/min
- 14. condition where the number of circulating platelets is deficient
- 16. carry the impulse to the heart apex and ventricular walls
- 17. Force per unit area exerted on the wall of a blood vessel by its contained blood
- 19. thrombus found in blood
Down
- 1. low BP in which systolic pressure is below 100 mm Hg
- 3. fragments of megakaryocytes
- 4. distal to elastic arteries; deliver blood to body organs and are active in vasoconstriction
- 6. Sustained elevated arterial pressure of 140/90 or higher
- 7. Thick-walled arteries near the heart; the aorta and its major branches
- 9. heart rate over 100 beats/min
- 13. carry blood toward the heart
- 15. Are formed when capillary beds unite
- 18. relaxation of heart muscle