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.
An inflammation of the meninges is referred to as. meningitis. Between the arachnoid layer and the pia mater is a space called the subarachnoid. space. It contains a clear, colorless fluid referred to as Cerebrospinal Fluid (CSF). CSF is produced in the ventricles of the brain by a collection of rich vascular protrusions. called the choroid plexus. Excess CSF is continuously reabsorbed by arachnoid villi. and returned to the venous system thus maintaining a consistent amount of fluid under. an intracranial pressure between 50 - 180 mmHg.