Across
- 3. Blood cells that have single-celled walls
- 7. Transport of oxygen happens through hemoglobin.
- 8. play important role in the immunity
- 11. Major part of the circulatory system
- 12. carry oxygenated blood from the heart to different organs
Down
- 1. Blood component that is straw-colored liquid and viscous
- 2. Carry deoxygenated blood from different organs to the heart.
- 4. Pulmonary artery carries impure blood to
- 5. present in veins to prevent backflow of blood.
- 6. Connective tissue
- 9. Similar to blood but RBCs are absent in it
- 10. Help to form clots and stop bleeding.