![]() The smallest branches are called bronchioles and each bronchiole has an air sac, also called alveoli. The bronchial tubes branch out into smaller subdivisions throughout each side of the lung. The trachea divides into smaller passages called the bronchial tubes. The diaphragm and rib cage essentially pump the lungs.Īs a person breathes, air travels down the throat and into the trachea, also known as the windpipe. Lungs do not have muscles to pump air in and out, though. When they compress, they expel carbon dioxide, a waste gas that bodies produce. When they expand, they pull air into the body. This is why, when one lung is punctured, the other can go on working. The lobes are made of sponge-like tissue that is surrounded by a membrane called pleura, which separates the lungs from the chest wall. ![]() The right lung is divided into three different sections, called lobes. "In healthy people without chronic lung disease, even at maximum exercise intensity, we only use 70 percent of the possible lung capacity." Parsons, a professor of internal medicine, associate director of Clinical Services, and director of the Division of Pulmonary, Allergy, Critical Care and Sleep Medicine at the OSU Asthma Center at The Ohio State University. "The lungs are over-engineered to accomplish the job that we ask them to do," said Dr. At rest, a man's lungs can hold around 750 cubic centimeters (about 1.5 pints) of air, while a woman's can hold around 285 to 393 cc (0.6 to 0.8 pints) of air, according to York University. Typically, a man's lungs can hold more air than a woman's. The left lung is narrower because it must make room for the heart. According to York University, the right lung is shorter because it has to make room for the liver, which is right beneath it. ![]() The right lung is a little wider than the left lung, but it is also shorter. ![]()
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