The mucus-secreting skin that lines (and protects against the environment) all openings, cavities or entrances into the body, such as the intestinal tract, lungs, urinary tract, sinuses, vagina, etc.
The general name given to the membrane which lines many of the hollow organs of the body. These membranes vary widely in structure in di?erent sites, but all have the common character of being lubricated by MUCUS – derived in some cases from isolated cells on the surface of the membrane, but more generally from de?nite glands placed beneath the membrane, and opening here and there through it by ducts. The air passages, the gastrointestinal tract and the ducts of glands which open into it, and also the urinary passages, are all lined by mucous membrane.... mucous membrane
A form of colitis that is less inflammatory and closer in nature, if not identical with Irritable Bowel Syndrome, with cramps, intestinal guarding followed by soft or hard stools and various amounts of mucus. There are usually periods of constipation... mucous colitis
the membranous structures that surround the embryo and contribute to the placenta and umbilical cord. They include the *amnion, *chorion, *allantois, and *yolk sac. In humans the allantois is always very small and by the end of pregnancy the amnion and chorion have fused into a single membrane and the yolk sac has disappeared.... extraembryonic membranes
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