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Q. Pathophysiology of mitral stenosis?
Normally there is no pressure gradient between left atrium and the left ventricle during diastole. However, as the valve orifice size decreases pressure gradient develops across mitral valve in diastole and the mean left atrial pressure increases. Increase in left atrial pressure would cause increase in the pulmonary artery wedge pressure. Increase in pulmonary artery wedge pressure would cause interstitial congestion by way of Starling's forces and this presents as symptoms of dyspnoea. Further rise in pulmonary artery wedge pressure causes pulmonary edema and pulmonary arterial hypertension. In some patients there will be disproportionate rise in pulmonary artery pressure due to vasoreactivity of pulmonary arteries. As the pulmonary artery systolic pressure increases further the right ventricle fails and features of right heart failure would ensue.
In yeast, a new mutation called suc was recently discovered. The suc mutant cannot use sucrose as a source of carbon, and will not grow if the culture medium contains only sucrose
Q. What is the substance produced in the liver that acts in the small intestine during digestion? How does that substance act in the digestive process? Bile is an emulsifier li
Characteristics Define Cancer - Hyperplasia Hyperplasia is the extreme proliferation of cells which can be observed in normal as well as cancerous tissues. In normal tissue, a
Describe how the hypothalamus regulates the secretion of anterior pituitary hormones and identify all of the individual hypothalamic regulatory factors. Describe how the hypothalam
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CILIA AND FLAGELLA Purkinj e first observed ciliary movement. Hodge studied detail structure of sperm flagellum. Manton studied structure of cilia in plants.
Aerobic and Anaerobic Exercises Generally, there are two types of exercises: - Aerobic - Anaerobic Aerobic exercises are those in which the patient spends calories fro
whats polymorphic
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