The Respiratory system
Lesson objectives
1.Identify the structures of the respiratory system and describe their functions
2. Describe gas exchange.
3. Describe how breathing is controlled.
4. Describe the effects of smoking on the respiratory system,
Structures of the Respiratory system For organisms, respiration means the process of gas exchange between a body and the environment. The human respiratory system picks up oxygen from the air we inhale and releases carbon dioxide into the air we exhale. The structures of the respiratory system include the