Membranes Health Dictionary

Membranes that line many internal organs and cavities, secreting a thin, lymph-like fluid, that lubricates and slowly circulates.... serous membranes

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.... mucous membranes (mucosa)

(ARM) see amniotomy.... artificial rupture of membranes

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

see PROM; PPROM; labour.... premature rupture of membranes