Articles - Lungs (Breathing) en-us http://www.thescizone.com/info N/A http://www.thescizone.com/info webmaster@thescizone.com 20 http://www.thescizone.com/info/articles/422/1/NORMAL-BREATHING-AND-THE-RESPIRATORY-TRACT/Page-1.html The purpose of the respiratory system is to supply oxygen to body tissues and to remove carbon dioxide, which is a waste product, from the body tissues. Breathing is the process by which oxygen in the air is brought into the lungs and into close contact with the blood, which absorbs it and carries it to all parts of the body. At the same time, the blood gives up carbon dioxide, which is carried out of the lungs with air breathed out. webmaster@thescizone.com (Super Admin) Sun, 04 Jun 2006 00:00:00 -0400