PGI PG CHANDIGARH 2009

Q.]During acclimitisation, decreased sweating is due to down regulation of?

a) Epinephrine receptors

b) Norepinephrine receptors

c) Acetylcholine receptors

d) Dopamine receptors

A 30-year-old woman presents with complaints of fatigue, dizziness, and shortness of breath on exertion for the past few weeks. On physical examination, a systolic murmur is noted at the left sternal border, with no signs of heart failure or valvular abnormalities. Laboratory findings reveal a hemoglobin of 7.5 g/dL, MCV of 72 fL, and low ferritin levels. Her reticulocyte count is slightly elevated. Which of the following is the most likely cause of the murmur in this patient?

A) Iron-deficiency anemia
B) Thalassemia minor
C) Aortic regurgitation
D) Mitral valve prolapse
E) Sickle cell disease

Hey newbeezz!!!
I know there's so much to learn but isn't fun...
Okay so I guess in the childhood we all have heard the song, Baby.. Yeah that same which you tried to sing but for someone... .Ok let's not go that way...
So yeah the singer justin bieber is suffering from a condition ----------- which affects------- nerve....

A) bell's palsy, VIIth nerve
B) Bell's palsy, VIIIth nerve
C) Ramsay hunt syndrome, VIIIth nerve
D) Ramsay hunt syndrome, VIIth nerve
E) Sir, mujhe koi mili hi nhi...

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A previously healthy, 27-year-old agricultural worker develops nausea, vomiting, abdominal cramps, cough with wheezing and dyspnoea, salivation, and lacrimation 1 hour after leaving work in a field. On examination, he is afebrile with a heart rate of 50/min and blood pressure of 90/55 mm Hg. Laboratory studies show plasma cholinesterase activity less than 50% of normal. Atropine is given intravenously, and his condition improves. He was most likely exposed to which of the following substances?

A Aflatoxin
B Cyclodiene
C Dioxin
D Ergot alkaloid
E Organophosphate

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[9.2] A 59-year-old man is admitted to the intensive care unit for a myocar- dial infarction. He is given a ẞ-adrenergic antagonist and instructed to avoid emotional turmoil to decrease sympathetic stimulation of the heart. From a cellular perspective, sympathetic stimulation of the heart does which of the following?