Across
- 4. have regular shape that is biconcave disk-like
- 7. contains more oxygen and less carbon dioxide
- 9. contains more carbon dioxide and less oxygen
- 10. carry blood to the heart which is always de-oxygenated
- 12. is mainly water but contains many dissolved substance
- 13. also called white blood cells
- 14. carry blood away from the heart which is always oxygenated
Down
- 1. where gas exchange takes place
- 2. comes from the bone marrow to clot the skin when cut
- 3. prevents the backflow of blood
- 5. solution of water, fluid and blood cells that carries/supplies oxygen and nutrients to cells and wastes away from the body cells
- 6. tubes of various sizes through which the blood travels
- 8. largest blood vessels
- 11. a macular pump that pumps the blood through the blood vessels to all parts of the body