Across
- 3. When Sally exercises, her body needs more ___________.
- 4. dioxide _____________-rich blood enters the right side of the heart from the other parts of the body.
- 5. The blood vessels are a set of _________ found inside our body.
- 6. The heart _________ blood to the lungs and other parts of the body.
- 8. Sally's heart rate ______________ when she exercises.
Down
- 1. _________-rich blood leaves the left side of the heart and is transported to the other parts of the body.
- 2. The circulatory system is the body's __________ system.
- 7. The circulatory system transports oxygen, water and _____________ to all parts of the body.