|MadSci Network: General Biology|
The parts of the respiratory system are: the nasal cavity, the mouth, larynx, pharynx, trachea, bronchial tubes, lungs, and diaphragm. The respiratory system is responsible for the exchange of oxygen and carbon dioxide. It supplies oxygen to the blood and gets rid of carbon dioxide and other waste gases. "The respiratory system provides oxygen from the air for cells to change food into energy. Air enters your lungs when you inhale. You breathe by lifting your ribs and contracting your diaphragm. The diaphragm is a sheet of muscles across the bottom of the chest cavity. Air passes through your nose. It passes from the back of the nose and mouth to the trachea. The trachea is a tube that leads into the chest cavity and divides to form the bronchial tubes. Most of the time the trachea is open and air passes freely in and out of the lungs. But when we swallow, a flap of cartilage, called the epiglottis, closes over the trachea so that food can't enter. Humans inhale oxygen and exhale carbon dioxide. The organ where this exchange of gases takes place is called the alveoli membranes." This information was found on the Internet at http://www.aj.com. Once you go to this site, you can ask any question that you want to ask. I typed in the following question: "Where can I find information about the respiratory system in the human body?" The site then provides many links to other great sites where information on and diagrams of the respiratory system can be found.
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