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.
Deep Sea Anglerfish. There are a couple hundred different species of anglerfish, living in open water, the deep sea or the ocean floor. What they all share is the hunting equipment that lends them their name, a fleshy growth on the head that ends in a bulb containing bioluminescent bacteria.