Across
- 3. Blood Cell Small cell in the blood that picks up oxygen in the lungs and transports it throughout the body
- 5. A muscular organ that pumps blood throughout the body
- 7. thin-walled microscopic air sacs that exchange gases
- 8. System The body system that transports products from the digestive and respiratory systems to the cells
- 12. Vessel that carries blood back to the heart
- 13. iron containing protein in red blood cells, carries oxygen for cells
- 14. a flap of tissue that covers the trachea when you swallow
- 16. Very narrow blood vessel that connects arteries to veins
- 17. exchange deoxygenated red blood cells get oxygen while passing through the lungs
Down
- 1. tube that leads from the larynx into the bronchi, also called the windpipe
- 2. the passageway in the back of the throat for air and food
- 4. muscle at the bottom of the chest cavity, helps with breathing
- 6. passages that branch from the trachea, direct air into the lungs
- 9. Vessel that takes blood away from the heart
- 10. A liquid that moves materials and wastes continuously through the body
- 11. branches leading off from the bronchi, get progressively smaller
- 15. the structure in the throat containing the vocal cords, also called the voicebox