Answers
19. Histamine type2 antagonist
It helps to reduce gastric acid secretion by blocking histamine receptors of acid producing parietal cells.
Eg: Ranitidine, Cimetidine.
20. Thousands years ago, a mutation in the human genome allowed many adults to drink milk to digest lactose. Until several years ago,that enzymes leaves once the person becomes adult. It means that most of the people had lactose intolerance.
Its symptoms were described in between 460- 370BC. Lactose tolerance originate in central Europe.
21. In liver disease, abnormal enzymes levels ALT and AST. Liver injury or inflammation can cause elevated enzymes levels. Lab studies shows elevated triglycerides, cholesterol and glucose levels.
Elevated Liver function test also an evident of liver disease.
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