Labels:daily | hakham | web site OCR: LUNGS OUR LUNGS are two pink, spongy organs that fill most of your chest and form the main part of your respiratory (breathing system They consist of mass of tiny tubes called bronchioles, which branch out to form over 300 million microscopic "bags" called alveoli. Inside your alveoli, oxygen moves into the blood from the air and waste carbon dioxide passes out the other wav Lungs cannot move on their own your ribs and diaphragm m uscular sheet below the lungs move order to force air in and out of the lungs as you breathe VOUR micr oscopic ygen ungs
