Across
- 2. What shape are red blood cells usually?
- 5. Another name given to red blood cells.
- 8. How many days does it take for red blood cells to reach maturation?
- 10. Name one of the places you'd find red blood cells within the human body.
- 11. What hormone controls the production of red blood cells?
- 12. Where are red blood cells made?
Down
- 1. What do red blood cells carry around the body?
- 3. What do red blood cells carry to the lungs?
- 4. Name of another organelle this red blood cell loses , during development, other than the mitochondria.
- 6. What is the percentage of red blood cells within the blood called?
- 7. What protein holds the oxygen within a red blood cell?
- 9. What disease can you possibly get as a result of having not enough red blood cells?