Name __________________________________________________ Date ___________ Period ______ Respiratory System Activity Use sources such as a model and online references to help you answer the following. The process of breathing oxygen into the lungs and expelling of carbon dioxide is called respiration. This process of taking in oxygen and expelling carbon dioxide also takes place at the cell level, so physiologists call the exchange process of gases taking place in the lungs external respiration and the exchange of gases between the blood or lymph and the cells internal respiration. These should not be confused with cellular respiration, which is a chemical process that releases energy within cells. Find each of the following structures on the model or diagram from an online source. Describe the position (or where it is), the anatomy of structure, and the function of each. Structure Anatomy of structure Function Nasal cavity Position (use proper anatomical terms) 1. 2. 3. Pharynx 4. 5. 6. Epiglottis 7. 8. 9. Larynx 10. 11. 12. Vocal cords 13. 14. 15. Trachea 16. 17. 18. Left and right main bronchi 19. 20. 21. 22. The terminal bronchioles lead into the respiratory zone structures. List the structures that are included the respiratory zone. 23. In the space below, sketch the breathing apparatus and use a green colored pencil to shade the structures that are part of the respiratory zone. 24. All other passages are conducting zone structures that serve as conduits to and from the respiratory zone. In your sketch above, use a blue colored pencil to shade the structures of the conducting zone. 23. Look up an image and description of the alveoli (air sacs). Draw an enlarged picture of and alveoli then describe how the structure and characteristics of the alveoli are suited for gas exchange.