Across
- 3. a structure inside the heart and in veins that prevents backflow of blood
- 5. a blood vessel that is the site of nutrient/waste exchange
- 8. the lower chambers of the heart
- 10. measurement of electrical activity inside the heart tissue
- 12. a blood vessel that takes blood towards the heart
- 13. the upper chambers of the heart
Down
- 1. covering around the heart
- 2. name of the circuit that sends blood to the lungs for oxygenation
- 4. muscular pump that is responsible for moving blood throughout the body
- 6. name of the circuit that sends blood to the body's organs
- 7. ______ fluid inside of the pericardial cavity, lubricating the heart
- 9. a blood vessel that takes blood away from the heart
- 11. largest artery emerging from the heart