Across
- 2. blood is ______ in oxygen when blood flows through from our heart to lower parts of our body
- 7. blood is ______ in carbon dioxide when blood flows through from lower parts of the body to heart
- 8. the ________ system carries digested food, water and oxygen to all parts of the body
- 9. the number of times we breath per minute
- 10. the tube that contains blood
Down
- 1. pumps blood to all parts of our body
- 3. the number of times the heart beats per minute
- 4. transports carbon dioxide and waste materials away from our body
- 5. our breathing ______ when we exercise
- 6. our heart rate ______ when we exercise