Across
- 3. Blood that has passed through the lungs.
- 5. Lower chambers of the heart.
- 6. Carry blood to the heart.
- 7. Upper chambers of the heart.
- 8. Carry blood away from the heart.
- 9. Prevent backflow of blood in the heart.
Down
- 1. The type of muscle that makes up the heart.
- 2. Blood that has not passed through the lungs.
- 4. Distributes oxygenated blood to all parts of the body.
- 5. Carry blood from the heart to the upper and lower body.