Describe the function and components of the mucosal barrier of the stomach. Protects the stomach from autodigestion Components Thick coating of bicarbonate-rich mucus Tight junctions of the epithelial cells Plasma membrane of gastric glands are impermeable to HCl.
World Range & Habitat. Sea lampreys, Petromyzon marinus, are found only in the Mediterranean and North Atlantic, in the coastal seas off the North East USA, Nova Scotia, southern Greenland, the UK, Ireland and Scandinavia. They are also found in the Great Lakes and enters inland freshwater rivers and streams to breed.
There are a lot of differences between a lamprey and hagfish. The lamprey occurs in the fresh water as well as act a marine.It acts both as a parasite and non parasite. It may grow up to 1 meter, while the hagfish is mainly marine.It acts mainly as a parasite.Its size is up to 1meter. The lamprey has a stout body and less slimy skin.he lamprey occurs in the fresh water as well as act a marine. It acts both as a parasite and non parasite. It may grow up to 1 meter, while the hagfish is mainly marine. It acts mainly as a parasite. Its size is up to 1meter. The lamprey has a stout body and less slimy skin.