what is serous fluid
Serous fluid originates from serous glands, with secretions enriched with proteins and water. Serous fluid may also originate from mixed glands, which contain both mucous and serous cells. A common trait of serous fluids is their role in assisting digestion, excretion, and respiration.In medical fields, especially cytopathology, serous fluid is a synonym for effusion fluids from various body cavities.There are many causes of effusions which include involvement of the cavity by cancer. Cytopathology evaluation is recommended to evaluate the causes of effusions in these cavities.nother type of serous fluid is secreted by the serous membranes (or serosa), two-layered membranes which line the body cavities. Serous membrane fluid collects on microvilli on the outer layer and acts as a lubricant and reduces friction from muscle movement. This can be seen in the lungs.