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.
one sea lamprey can upset an ecosystem and food chain by eating an estimated 40 pounds of fish or more in its lifetime multiply that times 22000 lamprey found in just one river and you have a lot of dead fish because of lower large fish populations small fish like the alewife were able to increase in numbers alewives are also invader species which compete with native fish for food and habitat download free sea lamprey wallpapers click on the image to open the large version