Across
- 4. A thick-walled vessel that carries oxygenated blood throughout the body
- 6. The muscular layer of the heart wall
- 7. The study of the structure of blood and the tissues that form blood
- 10. The iron containing pigment in red blood cells that carries oxygen
- 13. A thin layer that lines the interior of the heart
- 14. Another term for “platelet”
- 15. The clear, straw colored, liquid portion of blood
- 16. A thin-walled vessel that returns deoxygenated blood to the heart
Down
- 1. A microscopic vessel that creates a network between arteries and veins
- 2. A thin layer that lines the surface of the heart
- 3. The production and formation of blood cells
- 5. White blood cell
- 8. Lack of blood
- 9. The fibrous sac that encloses the heart
- 11. Red blood cell
- 12. Transparent, whitish-yellow liquid that contains white blood cells