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why right lungs is larger than left lungs?
The  right lung  has 3 lobes while the left has 2 lobes.

    The right lung is larger and heavier than the left lung, but is shorter and wider because the right dome of the diaphragm is higher and the heart and pericardium bulge more to the left.

    The anterior margin of the right lung is straight, whereas the margin of the left lung has a deep cardiac notch.


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