Across
- 2. - Molecule that is carried to all of the cells of the body.
- 4. - Tiny blood vessel where gas exchange occurs at the body tissues.
- 7. - Liquid part of blood.
- 11. - Blood cell that carries oxygen around the body.
- 13. - Molecule that is a waste product that is removed from cells.
- 15. - Door-like structure that keeps blood flowing in one direction.
- 16. - Type of control for the muscles of the heart.
- 17. - Muscular organ that is responsible for pumping blood around the body.
Down
- 1. - Process that allows the heart to beat.
- 3. - Cell that is responsible for blood clotting and healing wounds.
- 5. - Blood vessel that carries blood away from the heart.
- 6. - Force that blood applies on the walls of the blood vessel.
- 8. - Upper chamber of the heart.
- 9. - Lower chamber of the heart.
- 10. - Blood cell that protects the body from invading organisms.
- 12. - Process by which molecules move from an area of high concentration to an area of low concentration.
- 13. - System that transport blood and nutrients around the body.
- 14. - Blood vessel that carries blood toward the heart.