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.
Fishes live in water, breathe with gills, and have fins instead of legs. Most are covered with scales. Most fish in Missouri âlookâ like fish and could never be confused with anything else. True, lampreys and eels have snakelike bodies â but they also have fins and smooth, slimy skin, which snakes do not.