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Q. Explain about Gastric ulcers?
Gastric ulcers occur in the lesser curvature of the antrum of stomach. A gastric ulcer appears to be caused by reflux of bile and factors that disrupt the mucosa barrier permitting the hydrogen ions to diffuse into the mucosal tissue where they cause damage. The damage causes cell destruction and subsequent ulceration (due to defect in pyloric sphincter). NSAID dramatically increase the risk of ulcers and is related to the systemic inhibition of prostaglandin production. Thus results in impaired defense against acidity by the gastric mucosa. Another pathogenetic factor is H. Pylori infection and the resulting impaired mucosal defence.
Chlorophyll Chlorophyll, the pigment responsible for giving bright green colour to the vegetables, is very unstable and undergoes changes in colour which are often considered t
Relative to carrying capacity, what may result from unbridled continued growth of our population.
Q. What is the gas exchange unit of the mammalian lungs? The gas exchange units of the mammalian lungs are the alveoli. Q. What is the physical process through which gas ex
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Q. How do taenias obtain food and make gas exchange? The Tapeworms have sucking and hooks structures on their heads (scolex) that fixate the parasite in the gut wall these stru
How do we define an living organism
Is the epithelium vascularized? How do nutrients and oxygen reach the epithelium? Why is this feature a significant evolutionary acquisition? Epithelia are not vascularized (ca
What is the salivary digestive enzyme? Which type of food does it digest and into which smaller molecules does it transform the food? The salivary hydrolase is called as saliva
Q. What are risk factors for diseases? The Risk factors for a disease are everything that contributes to increase the risk of the disease to appear. For example, for most cardi
Acellular and Cellular Organisms you should be able to characterise living and non- living matter. However, the boundary-line between the two is not very precise. As you have
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