Across
- 4. a large vein carrying deoxygenated blood into the heart
- 5. breathe in and diaphragm pulls down
- 7. the system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
- 8. each of the two upper cavities of the heart from which blood is passed to the ventricles
- 10. breathe out and diaphragm pulls up
- 11. protect from illness and disease
- 12. the colorless fluid part of blood, lymph, or milk
Down
- 1. the body's way of breathing in oxygen and breathing out carbon dioxide.
- 2. carries oxygen from the lungs to the tissue
- 3. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords
- 4. carries blood to the heart
- 6. Carries blood away from the heart
- 9. contraction increases the volume of the thorax and so inflates the lungs.