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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.
Q. What is Atrial Extrasystoles? Atrial premature beats often occur at lower workloads and have little significance. As exercise increases, they usually subside and may then re
What is Saliva Saliva is the colourless viscous fluid. It helps in swallowing the food by lubricating the food and the neutral pH of saliva prevents the decalcifica
Q. Chordate identity card. How are they characterized according to examples of representing beings, type of symmetry, basic morphology, germ layers and coelom, digestive system, ci
EXPERIMENTS OF MENDEL MONOHYBRID CROSSES When only a single pair of contrasting or differentiating traits is considered in a cross (or inheritance of only one pair of cont
There are three steps of PCR a) Denaturation. The reaction combination is heated to 95°C for a short time period (about 15-30 sec) to denature the goal DNA into one strands w
Anther is the top of a stamen's filament; divided into pollen sacs in which the pollen grains are form.
Properties of pyridoxine a) It forms white, odourless crystals. b) The compound is readily soluble in water. c) When a neutral or alkaline solution of pyridoxine is
External Respiration: Diffusion of oxygen into blood and carbon dioxide into alveoli (external respiration) is the diffusion of oxygen from air in the alveoli of lungs to bl
Q. What is the difference between cerebrum and brain? What are the major parts of these structures? The concept of brain or encephalon comprehends the cerebrum mostly referred
Cellulose Cellulose is found in plants as microfibrils (2-20 nm diameter and 100-40,000 nm long). These form the structurally strong framework in the cell walls. Cellulose is
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