1. Respiratory System

2. Respiration in Action

3. Respiratory System
Defn: Brings oxygen into the body and removes carbon dioxide and other gases.

4. Parts of the Respiratory System
Nasal Cavity – Where air enters the body. Air is moistened and filtered
Mouth – Where air enters the body
Pharynx – Another name for the throat cavity
Larynx – Voice Box

5. Parts of the Respiratory System
Epiglottis – The flap of skin that covers the trachea.
Trachea – Directs air into the lungs. Has rings of cartilage.

6. Parts of the Respiratory System
Bronchi – Passages through which air enters the lungs
Lungs – Transfer oxygen into the blood and remove carbon dioxide from the lungs

7. Parts of the Respiratory System
Pleura – The outer lining of the lungs

8. Parts of the Respiratory System
Diaphragm – A large dome shaped muscle that separates the lungs from the abdomen

9. How the Diaphragm Works

10. Parts of the Respiratory System
Bronchial tubes – Tubes running from the trachea to the lungs

11. Parts of the Respiratory System
Alveoli – Tiny air sacs in the lungs. Surrounded by capillaries where gas exchange takes place.

12. Problems of the Respiratory System
Flu / Colds: Caused by a virus; cough, runny nose, aches fever
Tuberculosis: Bacterial lung infection
Allergies: Sneezing, itchy eyes, runny nose, hives; caused by a reaction to a substance
Pneumonia: Lung infection by bacteria or viruses; fever, chest pain, difficulty breathing

13. Problems of the Respiratory System
Lung Cancer: Alveoli destroyed; often caused by smoking
Graphic Picture!!!

14. Problems of the Respiratory System
Emphysema: Alveoli destroyed; extreme difficulty breathing; often fatal

15. Problems of the Respiratory System
Bronchitis: Swelling of the bronchi due to infection; cough fever, tightness in chest
Asthma: Bronchial swelling and blockage; wheezing, short breath, coughing
Health Animations - Diseases and Conditions - Asthma