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The Respiratory System
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The main job of is to provide oxygen to the blood, and release the carbon dioxide left over from the spent blood, works with the cardiovascular system to make this happen. Blood enters the lungs through the pulmonary circulation and is dark colored, low in oxygen, and high in carbon dioxide. It is pumped by the right side of the heart into the p ....
Middle of paper ....he bronchi and lying in front of the esophagus. The trachea, also called windpipe, is made up of numerous cartilaginous half-rings, the open ends are near the esophagus. These rings, located one above the other, are connected by muscular and fibrous tissue. The trachea is about 10-cm (4.5 in) long and 2.5 cm (1 in) in diameter. It is lined internal.... |
Word count: 763 |
Page count: 3 |
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