Across
- 2. projections in the small intestine where nutrients are absorbed into the bloodstream
- 4. Small air sacs in the lungs where diffusion occurs
- 5. Organ system responsible for transporting materials to cells
- 7. Organ system responsible for the breakdown and absorption of nutrients
- 9. Organs responsible for the filtering of blood
- 10. Organ system responsible for the intake and removal of gases
Down
- 1. Tiny blood vessels that surround the alveoli, nephrons, and villi
- 3. Organ in the excretory system where nutrients are absorbed into the bloodstream
- 6. How oxygen and carbon dioxide are transferred between the respiratory and circulatory system
- 8. Organ system responsible for the removal of waste