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Human lungs, Biology
A pair of spongy, elastic and bag like structures of lungs is present in the chest cavity, one on either side of the heart.
Lungs are enclosed by a double layer called PLEURA which protects the lungs from injury.
Space between the two membranes of the pleura is filled with pleural fluid.
Right lung is larger than left lung. Right lung is made up of three lobes while the left has only two lobes.
The lung has several thousands of alveoli.
Alveoli are supplied with blood capillaries.
The deoxygenated blood is brought to lungs by pulmonary artery, which divides into arterioles and capillaries.
Exchange of gases occurs in the alveoli.
Oxygenated blood is carried from lungs to the heart by pulmonary vein.
Posted Date: 8/29/2012 8:51:18 AM | Location : United States
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