चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) MD / MS / MDS प्रवेश परीक्षा तयारी
चिकित्सा स्नातकोत्तर प्रवेश (MECEE-PG) – MD / MS / MDS प्रवेश परीक्षा
MECEE-PG – MD/MS/MDS · MECEE-PG (MD/MS/MDS)
२,८६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MD/MS/MDS प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Growth hormone and prolactin exert their effects mainly through which signalling pathway?
सही उत्तर: ख) JAK–STAT pathway
GH and prolactin receptors belong to the cytokine receptor family, which lacks intrinsic kinase activity and signals via associated JAK kinases and STAT proteins.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which hormone acts through an intracellular (nuclear) receptor?
सही उत्तर: ख) Thyroxine
Thyroid hormones, like steroids, cross the membrane and bind nuclear receptors that regulate gene transcription; the others act on cell-surface receptors.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Secretin is released from the duodenum in response to acid and mainly stimulates:
सही उत्तर: ग) Bicarbonate-rich pancreatic secretion
Secretin from duodenal S cells causes the pancreas to secrete bicarbonate-rich fluid; CCK mainly stimulates enzyme secretion and gallbladder contraction.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The hormone that stimulates hunger and is secreted mainly by the stomach is:
सही उत्तर: घ) Ghrelin
Ghrelin from the gastric fundus rises before meals and stimulates appetite; leptin, CCK and PYY promote satiety.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Para-aminohippuric acid (PAH) clearance is used to measure:
सही उत्तर: क) Effective renal plasma flow
PAH is both filtered and almost completely secreted in one pass, so its clearance approximates effective renal plasma flow; inulin clearance measures GFR.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The countercurrent multiplier that creates medullary hypertonicity in the kidney is the:
सही उत्तर: क) Loop of Henle
Active NaCl transport out of the water-impermeable thick ascending limb, with countercurrent flow in the loop of Henle, builds the corticomedullary osmotic gradient.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Renin is secreted by the:
सही उत्तर: ख) Juxtaglomerular cells of the afferent arteriole
Modified smooth muscle (juxtaglomerular) cells of the afferent arteriole secrete renin; the macula densa senses tubular NaCl.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Peripheral chemoreceptors of the carotid body respond chiefly to a fall in:
सही उत्तर: ग) Arterial PO₂
Carotid bodies sense arterial PO₂ (dissolved O₂), not O₂ content, which is why anaemia and CO poisoning with normal PaO₂ do not stimulate them much.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Haldane effect refers to:
सही उत्तर: घ) Increased CO₂-carrying capacity of blood when haemoglobin is deoxygenated
Deoxygenated haemoglobin binds more CO₂ (as carbamino compounds) and buffers more H⁺, so venous blood carries more CO₂; the CO₂ effect on O₂ affinity is the Bohr effect.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following shifts the oxygen–haemoglobin dissociation curve to the right?
सही उत्तर: क) Increased 2,3-bisphosphoglycerate
A right shift (lower affinity, easier O₂ unloading) is caused by raised 2,3-BPG, CO₂, H⁺ (acidosis) and temperature.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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