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.
The paper describes three new species of earless dragon, all found in grassland areas of Queensland, now highly impacted by human activity such as agricultural and pastoral industries, and mining and gas extraction.arless dragons are found throughout most of mainland Australia. They live in dry open areas such as featureless stony deserts, cracking clay plains and grasslands. Most extend across vast tracts of the interior, but one southern temperate grassland species reaches the Darling Downs. Photo R. Ashdown.