The Respiratory system
Lesson Objective
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 thee 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..
nose, where air is filtered, moistened, and warmed.
pharynx, or throat, which serves as a passageway for both air and food
trachea, or windpipe, and the larynx, or vocal cords.
bronchi, two large tubes that lead to the lungs. Each bronchus branches into smaller passageways called bronchioles