Body Systems

3. a type of vascular tissue that carries dissolved sugars throughout a plant
5. Amount of energy needed to raise temperature 1 gram of water 1 degree C
8. A blood vessel that carries blood back to the heart.
10. Main organs of the respiratory system
11. small opening in the epidermis of a plant that allows carbon dioxide, water, and oxygen to diffuse into and out of the leaf
14. a tubelike passageway at the top of the throat that receives air, food, and liquids from the mouth or nose
17. a tube that is held open by C-shaped rings of cartilage
18. two narrow tubes that carry air into the lungs from the trachea
19. the two lower chambers of the heart
21. Large, flat muscle at the bottom of the chest cavity that helps with breathing
22. A muscular tube that connects the mouth to the stomach.
23. specialized tissue in plants that carries water and nutrients
24. a series of chemical reactions that convert light energy, water, and carbon dioxide into the food-energy molecule glucose and give off oxygen

1. a type of vascular tissue that carries water and dissolved nutrients from the roots to the stem and the leaves
2. microscopic sacs or pouches at the end of the bronchioles where gas exchange occurs
4. digestion a process in which food is physically broken into smaller pieces
6. part of food that is used by the body to grow and survive
7. A tiny blood vessel where substances are exchanged between the blood and the body cells.
8. fingerlike projections, many of which cover the folds of the small intestine
9. the two upper chambers of the heart
12. the mechanical and chemical breakdown of food into small particles and molecules that your body can absorb and use
13. Digestion a process in which chemical reactions break down pieces of food into small molecules
15. A blood vessel that carries blood away from the heart
16. waves of muscular contractions that move food through the digestive tract
20. the system that collects and eliminates wastes from the body and regulates the level of fluid in the body