Across
- 5. - Circulating fluid of lymphatic system.
- 6. - has three chambered heart.
- 7. vein - carries oxygenated blood to heart from lungs
- 8. atrium - receives blood from pulmonary vein
- 9. - Blood vessel with thick and elastic wall.
- 10. - prevents backflow of blood
- 12. atrium - receives deoxygenated blood from body parts.
- 13. cava - collects deoxygenated blood from body parts and gives to heart.
Down
- 1. artery - carries deoxygenated blood to lungs from heart.
- 2. - Type of circulation in birds.
- 3. - prevents mixing of oxygenated and deoxygenated blood
- 4. - Type of circulation in fishes.
- 5. ventricle - chamber of human heart with thickest muscular wall.
- 9. - largest artery
- 11. - valves present at the base of aorta.