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A thin layer of tissue that covers the lungs and lines the interior wall of the chest cavity. It protects and cushions the lungs. This tissue secretes a small amount of fluid that acts as a lubricant, allowing the lungs to move smoothly in the chest cavity while breathing.


MetroWest Medical Center provides advanced medicine and personalized care, right here in your community.

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The Center for Heart & Vascular Services. At the forefront of heart and vascular disease for more than 25 years.

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