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.
What poppers are is a type of drug that is typically amyl nitrate, isobutyl nitrite or alkyl nitrite. People inhale them to get high or to increase their sexual pleasure. In addition for use as a sex drug poppers are used in rave party scenes.he poppers or poppers are those liquids belonging to the alkyl nitrite family (particularly, isobutyl nitrite and butyl nitrite) that are used recreationally in the US and abroad to enhance sexual pleasure. Poppers, which are in small bottle container, are taken by inhaling the contents.