respirtory+system-+rebecca

Respiratory System pp.170-172 1. In words, trace the path of air into the body. 2. What is the purpose of the respiratory system? 3. What is the difference between the pharynx and the larynx?
 * When you first start to breath in, air enters into the nasal cavity which filters, warms, and moistens the air. The air enters through your nose or mouth. Once the air has entered into you body, it then goes through the pharynx, which is a passageway where pathway for all air and food cross. Then the air enters the glottis, which is the space between the vocal chords; an opening to the larynx. Once the air has traveled through the glottis, the air enters into the larynx (voice box) which produced sound. Then the air enters the trachea or your windpipe, which is a passage of air t the bronchi. Once the air leaves the trachea, it enters the bronchus, which is a passage of air to teh lungs. Then the air enters the bronchioles, which is a passage of air to the alveoli. Once the air leaves there, it enters into the lungs, which contain alveoli, or air sacs, which help carry out gas exchange. Then the air leaves the lungs and enters the diaphragm, which is the skeletal muscle, and also functions in ventilation.
 * The purpose of the respiratory system is to make sure that oxygen enters your body and that the carbon dioxide exits.
 * A pharynx is a passageway where pathway for air and food to cross. It also connects the nasal and oral cavities to the larynx. It is also called the throat- which has three parts. The nasopharynx, where the nasal cavities open above the soft palate; the oropharynx, where the naval cavity opens and the laryngopharynx, which opens into the larynx. The larynx receives air and is in front of the esophagus, which receives food. The larynx is usually open allowing air to cross. The larynx is a cartilaginous structure that serves as a pasageway for air between the pharynx and the trachea. It can be pictured as a triangle box. The larynx is called the voice box- because it holds the vocal corda.

Describe the following disorders in our words 1. Sinusitis- When you have an infection of the sinuses which is caused by the blockage to the opening of the air passageways. 2. Ear infection (otitis media)- When the middle of your ear starts to hurt which is caused by too much pressure on it. 3. Tonsilitis- Soarness of the throat and it hurts to swallow. When you tonsils are infected, this infection can spread to the middle of the ear, or the otitis media, and that can cause an ear infection. 4. Bronchitis- Bacterial. Viral or bacterial. Leading the the trachea, which leads to the lungs. It can be very harmful because there s no real cure for it. 5. Pneumonia- Your lungs become infected that causes the alveoli to fill with mucus and pus. Your lungs may becoem infected or filled with things like liquids and you begin to cough a lot more than normal. 6. tuberculosis-Its a bacteria. mycrobacteria attack your lungs causing breathing to be hard. 7. emphysema- A lung disorder because the alveoli walls has burst which reduces the total surface are for gas exchange. 8. asthma- When bronchioles constrict and causes breathing to be difficult. 9. lung cancer- a lung disease. Your lungs becoem damaged, or weak. 10. What three respiratory disorders are associated with smoking?
 * lung cancer, Asthma and Emphysema.