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"Gross anatomy" means the anatomy visible without the use of a microscope. The lungs are a pair of sac-like, pinkish organs that sit above the diaphragm. Each lung is covered in a network of capillaries that allow the gas exchange (oxygen into the blood, carbon dioxide out) with the blood. The capillaries attach to the pulmonary arteries which go to the heart. The left and right lungs sit on either side of the vertebral column and heart.

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12y ago

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