Let's Compare Mucosa and Serosa. 1  MUCOSA VS.  Mucosa. The mucous membranes (or mucosae or mucosas; singular mucosa) are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. mucosa \mucosa\ n.
Definition of dropper for English Language Learners. : a glass or plastic tube that is used to measure out liquids by drops.
The large end of the pessary is placed deep in the vagina, the small end of the stem protruding at the introitus. A doughnut pessary is a permanently inflated flexible rubber doughnut that is inserted to support the uterus by blocking the canal of the vagina. An inflatable pessary is a collapsible rubber doughnut to which a flexible stem containing a rubber valve is attached. The collapsed pessary is inserted, inflated with a bulb similar to that of a sphygmomanometer, and deflated for removal. A bee cell pessary is a soft rubber cube.