Moving Materials

2. small openings
4. Carry blood away from your heart.
7. A large muscle below the lungs that contracts and relaxes as air moves into and out of your lungs.
10. blood leaves through the lower two chambers of the heart which is called the.
11. tubelike passage way at the top of the throat that receives air, food, and liquids from the mouth or nose.
13. are very tiny vessels that enable oxygen, CO2, and nutrients to move between your circulatory system and your entire body.
15. vessels that carry blood towards the heart.

1. carries dissolved sugars throughout a plant
3. where gas exchange occurs.
5. A tube that is held open by C-shaped rings of cartilage.
6. The main organs of the respiratory system.
8. tissue specialized plant tissue composed of tubelike cells that transport water and nutrients.
9. two narrower tubes that lead into the lungs.
12. carries water and dissolved nutrients from the roots to the stem and leaves.
14. blood enters the upper to chambers of the heart which is called the.