Across
- 1. Liquid inside of the lymphatic system.
- 3. the alternating expansion and relaxation of the artery wall.
- 6. The first branch of the aorta.
- 7. Tiny narrow blood vessels.
- 9. The process by which molecules move from an area of higher concentration to an area of lower concentration.
- 11. The body's disease fighters.
- 13. The largest artery in the body.
- 15. Takes oxygen from the lungs and delivers it to the rest of the body.
- 18. cells that send out a signal to pump the heart.
- 19. carries blood away from the heart.
- 20. Cell fragments that help blood clot together at a wound site.
Down
- 2. A disorder in which a person's blood pressure is normally over 140/90.
- 4. A hollow, muscular organ that pumps blood.
- 5. Occurs when blood flow to part of the heart doesn't receive blood and oxygen.
- 6. carries needed substances to cells, carries waste product away from cells, and fights disease.
- 8. The upper chamber of the heart.
- 10. The lower chamber of the heart.
- 12. The force blood exerts.
- 14. A flap of tissue that prevents blood from flowing backwards.
- 16. The liquid part of the blood.
- 17. carries blood to the heart.