Letter L

LUL

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Acronym for the left upper lobe (of the lung).</P> The left lung has but two lobes.

The other lobe is naturally the left lower lobe (LLL).</P> The right lung has three lobes: the right lower lobe (RLL), the right middle lobe (RML), and the right upper lobe (RUL).</P> The reason why the right lung has three lobes whereas the left lung has only two is not known but a convenient (albeit teleological) way to think about it is that the lack of a lobe on the left leaves room for the heart on that side.

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