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Respiratory System

Respiratory System. Air Traffic Control. Air enters mouth or nose Pharynx Epiglottis Trachea Bronchi Bronchiole Alveoli. Keeping It Clean. Nose hair Cilia Mucus * Cilia can be killed by smoking*. Gas Exchange. Alveoli have thin walls Capillary mesh around each alveolus

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Respiratory System

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  1. Respiratory System

  2. Air Traffic Control • Air enters mouth or nose • Pharynx • Epiglottis • Trachea • Bronchi • Bronchiole • Alveoli

  3. Keeping It Clean Nose hair Cilia Mucus * Cilia can be killed by smoking*

  4. Gas Exchange • Alveoli have thin walls • Capillary mesh around each alveolus • Diffusion of oxygen and CO2 to and from blood stream

  5. Transport • RBC – red blood cells • RBCs contain hemoglobin which contains iron • Iron attracts and holds oxygen

  6. Control • Controlled by medulla oblongata • Diaphragm pulls down, lungs expand ***No vacuum, no breathing***

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