Respiratory System

4. A protein inside red blood cells that carries oxygen from the lungs to tissues and organs in the body and carries carbon dioxide back to the lungs.
8. he airway that leads from the larynx
12. It carries air, food and fluid down from the nose and mouth
13. The area of the throat containing the vocal cords and used for breathing, swallowing, and talking
14. the process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions.
16. process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

1. The tiny branch of air tubes within the lungs that is a continuation of the bronchus
2. a small cavity or pit
3. The large air passages that lead from the trachea
5. The flap that covers the trachea during swallowing so that food does not enter the lungs.
6. a pair of folds of tissue that extend across the inside of the larynx and that produce the voice when air exhaled from the lungs causes them to tighten and vibrate
7. a flexible connective tissue that keeps joint motion fluid by coating the surfaces of the bones in our joints and by cushioning bones against impact
9. the flow of the breath out of an organism
10. situated or extending between the ribs
11. your diaphragm contracts and moves downward.
15. The process of breathing