2. Cellular Respiration
Definition: The reaction between oxygen and nutrients that the cell uses to extract the energy it needs.
Location: Inside the cells’ mitochondria
Equation: Nutrients + oxygen = energy + carbon dioxide + water

3. Respiratory System: Answer the following questions (p 173)
Name the two parts of the respiratory system.
List the parts of the Respiratory tract.

4. The Two Parts of the Respiratory System:
The Respiratory Tract
The Lungs
The Parts of the Respiratory Tract:
The nasal passages
The pharynx
The trachea
The bronchi (branch out into bronchioles)

6. Write the FUNCTION of each of the following six Respiratory Tract structures (p174)
Nasal Passages
Pharynx
Larynx
Trachea
Bronchi
Lungs

7. Nasal Passages

8. Pharynx (throat)

9. Pharynx

10. Larynx

11. Trachea, Bronchi and Larynx

12. Lungs

13. Smoker’s Lung

16. Gas Exchange within the Lungs
Write the following concepts in your notebook:
Diffusion: Substances will move from an area where they are at a high concentration to an area where they are at a lower concentration.
Substances will move from an area of high pressure to an area of lower pressure
As pressure INCREASES concentration INCREASES.
As volume INCREASES concentration DECREASES.

17. Diffusion Animation
/student_view0/chapter2/anim ation__how_diffusion_works.html

18. Mechanics of Breathing
Put your hands on your rib cage and take a deep breath. Describe what happens to the volume and pressure of your lungs
After you’ve taken in a deep breath, keep your hands on your rib cage and exhale. Describe what happens to the volume and pressure of your lungs.

21. Gas Exchange in the Lungs Animation
BodyWorks/IntroductiontotheRespiratorySy stem/Pages/GasExchange.aspx

22. Overview of Respiratory System and Gas Exchange Animation https://www

23. Answer the following questions.
Draw a diagram of the alveoli with their blood vessels.
Include oxygen and carbon dioxide on your drawing and indicate their directions of movement with arrows.
Describe how gas exchange between the blood and the lungs occur.