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Respiratory System

Respiratory System. In Class Notes:. FUNCTION OF THE RESPITORY SYSTEM. Provides oxygen for cells Removes carbon dioxide from body. Organs that are involved. Mouth Nose Pharynx Larynx Trachea Lungs Epiglottis Bronchi Nasal cavity Bronchioles Alveoli Diaphragm Cilia.

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Respiratory System

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  1. Respiratory System In Class Notes:

  2. FUNCTION OF THE RESPITORY SYSTEM • Provides oxygen for cells • Removes carbon dioxide from body

  3. Organs that are involved • Mouth • Nose • Pharynx • Larynx • Trachea • Lungs • Epiglottis • Bronchi • Nasal cavity • Bronchioles • Alveoli • Diaphragm • Cilia

  4. Sequence Of Breathing • 1. Air pressure drops in lungs, and air enters. • 2. Diaphragm contracts, the lungs are pulled down and expanded. • 3. Diaphragm relaxes, and lungs contract. • 4. Air is forced out of lungs.

  5. Diagram:

  6. Parts you should know:

  7. Regulation of Breathing • Regulation is controlled by the brain • Breathing is involuntary; you can hold your breath, but the effect in temporary • Carbonic acid (carbon dioxide in water) levels dictate breathing • A drop in pH level increases breathing; a rise would slow breathing

  8. What effects does smoking have on the respiratory system? 500,000 deaths a year are related to smoking. Lung Cancer, Bronchitis, Emphysema, and other sicknesses are caused by it. Smoking can lead to poor health within the respiratory system.

  9. Name at least 3 disorders & provide a description: -Asthma – inflammation of the airways -Bronchitis – inflammation within the lungs -Emphysema- Destruction of lung tissue

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