Across
- 4. carries oxygenated blood away from the heart
- 5. the two upper chambers of the heart
- 6. A thin and smooth membrane that lines the inside chambers of the heart.
- 9. A fibrous layer that encloses the heart
- 10. only artery to carry de oxygenated blood
- 11. carries blood towards the heart
- 12. Throat
Down
- 1. windpipe
- 2. Sits Upon the heart muscle and covers it giving a smooth surface
- 3. The fibrous muscle tissue of the heart.
- 4. conducts gas exchange
- 7. the bottom two chambers of the heart
- 8. Voice Box