The word "mesothelium" is a medical term that refers to the thin membrane that covers the internal organs in the body's cavities. The spelling of this word, in IPA phonetic transcription, is [ˌmɛsə(ʊ)ˈθiːliəm]. The pronunciation begins with the "m" sound, followed by "eh" and "s" sounds, and ending with "lium." This word can be challenging to spell due to its length and rare usage, but it is crucial to get it right in medical contexts.
Mesothelium is a medical term that refers to a specialized type of epithelial tissue that lines the cavities and surfaces of certain organs in the body. It is composed of a layer of thin, flat cells known as mesothelial cells, which are tightly packed to form a smooth and protective barrier.
The primary function of the mesothelium is to provide a lubricating surface within body cavities, allowing organs to move smoothly against each other without friction or irritation. This lubrication is facilitated by the secretion of a fluid known as serous fluid, which helps to reduce friction and maintain organ function.
The mesothelium can be found in various parts of the body, such as the pleural cavity surrounding the lungs, the pericardial cavity surrounding the heart, and the peritoneal cavity in the abdominal region. It connects and covers these organs, acting as a protective layer.
Despite its vital functions, the mesothelium is also susceptible to certain diseases. One of the most well-known conditions associated with the mesothelium is mesothelioma, a rare and aggressive form of cancer that typically affects the pleura, peritoneum, or pericardium. Mesothelioma is often linked to asbestos exposure and can cause severe complications and symptoms.
In summary, the mesothelium is a specialized tissue lining the body's cavities and organs, providing protection and lubrication. While it is essential for normal organ function, it can also be prone to diseases, such as mesothelioma.
The epithelium lining the caeloma or primitive body-cavity in the embryo.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "mesothelium" is derived from two Ancient Greek terms. "Meso" comes from the Greek word "mesos", meaning middle or intermediate, while "thelium" is derived from "thēlē", meaning nipple or female breast. Thus, "mesothelium" combines these Greek roots to refer to the cell layer that lines certain internal organs and body cavities, resembling a middle layer resembling the epithelium of serous membranes.