DH+respiratory+system

Respiratory System pp.170-172 1. __In words, trace the path of air into the body.__ First, the air enters through the nose/mouth. From there, it passes through the pharynx, which is the pathway where food and air cross. After the pharynx, the air moves through the glottis. After the glottis, the air moves into the larynx, or the voice box. The larynx produces sound when air moves through it. From the larynx, the air then moves into the trachea (or the windpipe) where it is then passed into the bronchus. The bronchus are passages that take the air too the lungs. Once the air is in the bronchus, it goes into the bronchioles. Bronchioles are passages that lead the air to the alveoli. The alveoli are located in the lungs, which is how the air gets into the lungs. The alveolis in the lungs "carry out gas exchange". After the lungs, the air goes into the diaphragm, which functions in ventilating the air. Then, the air is pushed out of the body, through either the nose or the mouth. 2. __What is the purpose of the respiratory system?__ The purpose of the respiratory system is to get oxygen into the blood stream so that the body can survive. Every cell needs oxygen, and the air is our main source of oxygen. Breathing also gets carbon dioxide out of the body. Carbon dioxide in mass amounts can eventually kill a person. It's a toxin. 3. __What is the difference between the pharynx and the larynx?__ The pharynx is just a passageway. The larynx is the voice box where sound is produced such as talking or singing.

1. Sinusitis - when the sinuses become inflamed 2. Ear infection (otitis media) - when there's a growth of bacteria in the ear canal 3. Tonsilitis - when the tonsils (located at the back of the throat) become inflamed either by bacteria or infection 4. Bronchitis - when the bronchi becomes inflamed (or more so, the mucus in the bronchi pathway becomes infected) 5. Pneumonia - a resperatory disease that makes it hard to breathe and do normal physical activities 6. tuberculosis - a resperatory disease in the lungs that is spread through droplets of the infection in the air 7. emphysema - a disease of the lungs that is chronic and irreversible 8. asthma - a resperatory disorder, usually induced by allergens such as fur, dust, grass, pollen, etc. 9. lung cancer - cancer located in the lung: cells on the cell walls of the lungs clump together to form a cancerous mass. 10. What three respiratory disorders are associated with smoking? - lung cancer, emphysema, asthma
 * Describe the following disorders in your words**