1. Circulatory System Vocabulary

2. Atrium  Upper chamber of heart

3. Ventricle  Lower chamber of heart

4. Valves  Flaplike structures that prevent blood from flowing backwards Top View of Heart and Valves

5. Artery  Blood vessel that carries blood away from the heart

6. Vein  Blood vessels that carry blood back to the heart

7. Capillary  Tiny blood vessel that allows an exchange between blood and body cells

8. Pulmonary Circulation  Circulation between the heart and lungs

9. Systemic Circulation  Circulation between the heart and the rest of the body