nbme 3 block 3 ..q 1 ---------to------q50 - drona99
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nbme 3 block 3 ..q 1 ---------to------q50 - drona99
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03-19-2011, 02:07 AM
Qn 5
Answer is E superoxide anion High oxygen concentration produces superoxide anion which in turn produces hydroxyl and peroxide free readicals
03-19-2011, 02:12 AM
ischemia/reperfusion in acute MI is superoxide free radical and cytosolic Ca irreversible damage previously injured cells due to influx of ca intocytosol produce hypercontraction of myofibril---> band necrosis
03-19-2011, 02:20 AM
q5--
rtpcr - 03/19/11 06:07 Qn 5 Answer is E superoxide anion High oxygen concentration produces superoxide anion which in turn produces hydroxyl and peroxide free readicals sooner - 03/19/11 06:12 ischemia/reperfusion in acute MI is superoxide free radical and cytosolic Ca irreversible damage previously injured cells due to influx of ca intocytosol produce hypercontraction of myofibril---> band necrosis Neutralization of free radicals Superoxide dismutase neutralizes ---superoxide free radicals. Glutathione peroxidase (enhances glutathione) neutralizes ---peroxide, hydroxyl, and acetaminophen free radicals. Catalase neutralizes--hydrogen peroxide free radicals. Vitamin antioxidants (ascorbic acid, vitamin E, β-carotenes) block the formation of free radicals and degrade free radicals.
03-19-2011, 02:27 AM
qn 6
Ans B Fragile X syndrome is trinucleatide repeat disorder. CGG repeats And all patients and their future generation who have diseases with trinucleatide reapeats experience "anticipation' ...that is the disease manifestats earlier and earlier with each generation Other trinucleatide repeats are - Huntingtons disease = CAG repeats - Myotonic dystrophy = CTG repeats - Freidrich ataxia = GAA repeats
03-19-2011, 02:36 AM
Qn 7 : C
Glial CElls or astrocytes proliferate in the area of CNS damage, thereby forming a glial scar http://en.wikipedia.org/wiki/Gliosis
03-19-2011, 02:39 AM
Qn 8 : J) Sublimation
Process whereby one replaces an unacceptable wish with a course of action tat is similar to the wish but does nto conflict with one's value system
03-19-2011, 02:43 AM
Qn 9: Increased proportion of Fe3+
This is describing methemaglobinemia, a cyanotic syndrome. Nitrates are reducers and they reduced the iron in his heme from 2+ to 3+ so it can no longer carry O2
03-19-2011, 02:48 AM
q10- naloxone and morphin act on same receptor--- competitve antagonist will be paralellel and decrease potency---/ c is the answer
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