Across
- 1. type of white blood cell that engulfs pathogen
- 4. protein found in red blood cells that bind to oxygen
- 7. air sacs at the very end of bronchioles in your lungs
- 8. body's smallest blood vessels
- 9. biological process of producing offspring
Down
- 1. microorganism that causes disease
- 2. type of respiration with the lack of oxygen
- 3. type of white blood cell that produces antibodies
- 5. type of respiration with the presence of oxygen
- 6. your body's process of keeping its internal environment stable and balanced