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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.
Numerous receptors have intrinsic or tightly related enzyme activity. On the required of ligand to their extracellular face like receptors undergo a conformational change and acti
Toxic agents present in food which interfere with thyroxine synthesis lead to the development of: 1. toxic goitre 2. cretinism 3. simple goitre 4. thyrotoxicosis si
The holoenzyme is denatured by heat at very high temperature. It is found that two polypeptides, although denatured, contains chains that remain together as a unit, while two other
To observe yeast plants Borrow a microscope from a college, a high school, a doctor or a hospital. Place a some drops of the sugar solution which having yeast on a glass slide
Please I need short notes on polyphylrtic theory
Define Mineralizations and formation of new bone? Vitamin D plays a role in the synthesis of a prominent non collage nous protein, osteocalcin, a vitamin K- dependent protein f
Primary amines can act as bases; they can- Select one: a. Absorb a proton to become R-NH2+2 b. Release a proton to become R-NH2+ c. Absorb a proton to become R-NH3+
A dihybrid cross yields 320 F2 offspring. How many are expected to resemble the homozygous recessive parental?
What are the two main species of taenias that cause human diseases? The two major species of taenias that cause disease in humans are Taenia solium, or the pork tapeworm, and T
Cytoplasmic Reorganisation Meiosis is also associated with major reorganisation of the cytoplasm of MMCs and microspores. Microspore mother cell shows high metabolic activity.
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