circulatory system

12345678
Across
  1. 3. What happened after she rested—her heart and breathing returned to normal.
  2. 5. The organ that beat very fast when Fatima was running.
  3. 7. These body parts became weak because they weren’t getting enough oxygen.
  4. 8. How Fatima felt when her circulatory system couldn't keep up.
Down
  1. 1. The gas her muscles needed more of during running.
  2. 2. Tubes that widen to help blood move quickly to her body during exercise.
  3. 4. What the body needs more of when running or doing exercise.
  4. 6. This liquid carried oxygen to Fatima’s muscles.