Body Systems

2. Blood vessel that carries blood to the heart.
4. The connective tissue made up of plasma, RBCs, WBCs and platelets.
6. Tiny sacs at the end of the bronchioles where gas exchange occurs.
7. Carries oxygenated blood from the heart to other body parts.
9. The part of the blood that helps fight pathogens
14. Single tube that carries gases into and out of the body. Has rings of cartilage.
16. Voice box, allows speech
17. Blood Cells The part of the blood that transports gases.
20. Organ system that exchanges gas between the body and environment.
21. The organ where gas exchange occurs.
23. Pieces of cells in blood that help with clotting.

1. The part of the respiratory systems that prevents food from going into the trachea.
3. Part of the respiratory system that splits into two sections.
5. The gas that is produced as waste by cells in the body.
8. Liquid part of the blood that carries water, nutrients and urea.
10. Blood vessels where blood exchanges materials with other cells in the body.
11. The rate at which your heart beats when you are sitting still and relaxing.
12. Tiny tubes that carry air deep into the lungs.
13. The organ that pumps blood throughout the body
15. The organ system that transports materials around the body in blood.
18. Region of the throat where the nasal cavity, oral cavity, trachea, and esophagus meet.
19. Part of the body that warms, moistens and filters air as it enters the body.
22. The gas that is used by mitochondria to provide cells with energy.