Organs Crossword

3. to spread out or move from an area of higher concentration to an area of lower concentration.
5. tiny hair-like structures in the respiratory system that help to filter out dust and foreign particles.
6. relating to the stomach and intestines, involved in the digestion and absorption of food.
9. the breakdown of food into smaller components that can be absorbed by the body.
10. the process by which a system maintains stability while adjusting to conditions that are optimal for survival.
12. small openings on the surfaces of leaves that allow for gas exchange.
13. the process by which green plants use sunlight to synthesize foods with the help of chlorophyll.
14. tiny air sacs in the lungs where gas exchange occurs.

1. the organ system responsible for taking in oxygen and expelling carbon dioxide.
2. substances that provide nourishment essential for growth and the maintenance of life.
4. blood vessels that carry oxygen-poor blood back to the heart.
7. blood vessels that carry oxygen-rich blood away from the heart.
8. a digestive fluid produced by the liver that helps to break down fats.
10. chemical messengers produced by glands that regulate various functions in the body.
11. small blood vessels where the exchange of gases and nutrients occurs.