5 to shape so as to form the contour of something. 6 to mark contour lines on. 7 to construct (a road, railway, etc.) to follow the outline of the land. (C17: from French, from Italian contorno, from contornare to sketch, from tornare to turn)
Pleural effusion, also called âwater on the lung,â is an excessive buildup of fluid between your lungs and chest cavity. Thereâs always a small amount of liquid inside your lungs.This fluid works to coat the membranes (pleura) that line the outside of your lungs and lubricate the chest cavity to aid in breathing.he pleura creates too much fluid when itâs irritated or infected. This fluid accumulates in the chest cavity outside the lung, causing whatâs known as pleural effusion. Certain types of cancer, such as lung, breast, and ovarian cancers, can cause pleural effusions. Lymphoma and mesothelioma can cause them too.
Within the lungs, your bronchi branch into thousands of smaller, thinner tubes called bronchioles. These tubes end in bunches of tiny round air sacs called alveoli (al-VEE-uhl-eye). Each of these air sacs is covered in a mesh of tiny blood vessels called capillaries.our lungs and linked blood vessels deliver oxygen to your body and remove carbon dioxide from your body. Your lungs lie on either side of your breastbone and fill the inside of your chest cavity.