Lesson 4.4 - Introduction of respiration

Guidelines:
1. Four important structural features that enable respiratory system function properly. 
2. Four stages for human respiration (important)
3. Cellular respiration - chemical reaction of break down glucose 
4. Definition of ventilation and mechanism of how diaphragm, thoracic cavity and rib muscle push air in/out. 
5. Structure of lungs: epiglottis, trachea, bronchi, bronchioles, alveoli. 
5. Three ways of respiration system other than lung breathing: skin respiration, gill respiration (counter-current flow), and tracheal system. 
6. Spirograph


10.1 - 10.2 PPT part 1