Across
- 3. The smallest blood vessel where exchange happens
- 5. The process where particles move from high concentration to low concentration
- 7. A simple sugar delivered to cells for energy
Down
- 1. A waste gas that moves from cells into the blood
- 2. Something harmful produced by cells that must be removed
- 4. A group of cells working together, shown next to the capillary
- 6. The gas delivered to cells to help them live