1. The Respiratory System

2. Respiratory System Parts of the Respiratory System
Is the set of organs that supply your body with oxygen and rid your body of carbon dioxide
Parts of the Respiratory System
Nose/Mouth- passages for air
Epiglottis- flap of tissue in back of mouth that covers the trachea to prevent food from entering it
Bronchi-two tubes that branch from the trachea; one tube leads to each lung

3. Parts of the Respiratory system
Diaphragm- large dome-shaped muscle below the lungs that expands and relaxes to produce breathing
Trachea- tube in throat that takes air to and from lungs (also called windpipe)
Lungs- two large organs that exchange oxygen and carbon dioxide

4. Parts of the respiratory system
Larynx- during sound production, the vocal cords close together and vibrate as air expelled from the lungs passes between them
Pharynx- allows air, foods, and fluids to pass through
Pleural cavity- a sac composed of two thin membrane layers encloses each lung. A fluid secreted by one of these pleural membranes allows them to slide over each other easily during breathing

5. The breathing process
INHALING- your diaphragm moves down and your rib cage expands, creating more room in your chest. This causes air to to rush into your body. The air enters through the nose or mouth, then moves past the epiglottis and into the trachea and bronchi.
INSIDE THE LUNGS- the bronchi divide into smaller passages called bronchioles. Air passes through the bronchioles into the alveoli, which are surrounded by capillaries. Here the oxygen in the air moves into your bloodstream, and carbon dioxide from the blood enters the alveoli.
EXHALING- your diaphragm pushes up, and your ribs move in and down, forcing the air out of your lungs. The air, now containing carbon dioxide, moves back through the bronchioles and bronchi, up the trachea, and out through the nose or mouth

6. PROBLEMS OF THE RESPIRATORY SYSTEM
Disease or Disorder
Description
Treatment
COLD/FLU
Diseases caused by viruses; symptoms include runny nose, cough, fever, and aches
Bed rest and fluids; vaccines can prevent some types of flu
PNEUMONIA
Bacterial or viral disease that affects the lungs; symptoms include fever, chest pain, breathing difficulty
Antibiotics for bacterial type; bed rest for viral type
ASTHMA
Disease in which airways narrow; symptoms include wheezing, shortness of breath, coughing
Medication to relieve symptoms; avoiding activities or substances that trigger attacks

7. Disease or Disorder
Description
Treatment
TUBERCULOSIS
Bacterial disease that affects the lungs; symptoms include cough, fatigue; can be fatal
Antibiotics
EMPHYSEMA
Disease in which alveoli harden and denigrate; symptoms include extreme difficulty in breathing; almost entirely caused by smoking
No known cure; pure oxygen can make breathing easier
LUNG CANCER
Uncontrolled growth of cells that reproduce abnormally in lungs; often caused by smoking
Surgery, radiation, and medications; survival rates are very low

8. CARING FOR YOUR RESPIRATORY SYSTEM
Don’t smoke
Avoid people and situations that would expose you to tobacco smoke in the air
Take care of your body when you have a cold, flu, or any other respiratory illness