Across
- 4. System that include organs and tissues that transport essential material to body cells and remove their waste products
- 8. blood cells that help the various body systems destroy disease-causing germs
- 10. small, disk-shaped structures that help your blood clot
- 11. blood cells that carry oxygen to all other cells in the body
- 12. carries blood to and from almost all body cells and connects arteries and veins
- 13. carries blood away from the heart to various parts of the body
Down
- 1. the muscle that acts as the pump for the circulatory system
- 2. carries blood from all parts of the body back to the heart
- 3. the force of blood pushing against the walls of the blood vessels
- 5. usually results from blood clots in the brain or from a torn blood vessel
- 6. a condition in which arteries harden and reduce blood flow
- 7. also called high blood pressure
- 9. blockage of blood flow to the heart