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.
Flipper is an exceedingly pleasant, modest picture about a boy and his dolphin, and features easygoing, natural performances from Luke Halpin, as the boy, and Chuck Connors, as his rugged, seafaring father. The film is the first in the franchise that led eventually to a popular TV show.