स्नातकोत्तर मेडिकल प्रवेश (MECEE-PG)
स्नातकोत्तर मेडिकल प्रवेश (MECEE-PG)
MECEE-PG – MD/MS/MDS Entrance · २,८६५ प्रश्न
२,८६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MD/MS 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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What is the primary nutritional component that colostrum provides to newborns, particularly important for immune development?
सही उत्तर: ख) Antibodies (Immunoglobulins)
Colostrum is renowned for its high concentration of antibodies, primarily Immunoglobulin A (IgA), which protects the newborn’s immature digestive system and provides passive immunity. The other options – Vitamin C, Iron, and Folic Acid – are present in colostrum but not as the primary, defining characteristic.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following accurately describes the structure of the primary active transport system (Na+/K+ ATPase) found in cell membranes?
सही उत्तर: ख) B. It utilizes ATP hydrolysis to move ions against their concentration gradients.
Option B is correct; the Na+/K+ ATPase utilizes the energy from ATP hydrolysis to actively pump sodium ions out of the cell while bringing potassium ions into it, effectively establishing concentration gradients against their natural flow. Options A and D are incorrect descriptions of the process.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In skeletal muscle physiology, what primarily determines the rate of contraction?
सही उत्तर: ग) C. The frequency of action potentials reaching the neuromuscular junction.
Option C is correct; the rate of contraction is dictated by the frequency of action potentials generated in the motor neuron, which then trigger muscle fiber depolarization. Options A, B, and D are factors influencing overall muscle function but don’t directly determine the *rate* of contraction.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the mechanism by which aldosterone regulates blood pressure?
सही उत्तर: ख) B. By promoting vasodilation throughout the circulatory system.
Option A is correct; aldosterone acts on the principal cells of the distal nephron, increasing sodium reabsorption and consequently water reabsorption, which expands blood volume and elevates blood pressure. Options B, C, and D represent incorrect effects of different hormones or physiological mechanisms.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of the intercalated cells in the renal medulla is:
सही उत्तर: ग) C. Facilitation of countercurrent multiplication for concentrating urine.
Option C is correct; intercalated cells are specialized for creating an osmotic gradient through countercurrent multiplication, allowing for efficient water reabsorption and urine concentration. Options A, B, and D relate to other renal cell functions or processes – they're not the primary role of intercalated cells.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient develops sudden onset left shoulder-tip pain after sustaining blunt abdominal trauma. Physical examination reveals guarding and rigidity in the left upper quadrant. What is the MOST likely diagnosis? (2023)
सही उत्तर: ख) Splenic Rupture
Left shoulder-tip pain following blunt abdominal trauma, particularly with guarding and rigidity, strongly suggests splenic rupture. This is due to diaphragmatic irritation caused by the spleen’s displacement during the injury.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 10-year-old boy is brought in by his parents who report he has been ‘climbing up’ when he stands up from a lying position. On examination, the physician notes that he exhibits a positive Gowers’ sign. What is the MOST likely underlying diagnosis?
सही उत्तर: ख) Spinal muscular atrophy (SMA)
A positive Gowers' sign – where the child flexes their hips and knees to lift their hands up as they stand - is strongly associated with Spinal Muscular Atrophy (SMA). This indicates muscle weakness due to nerve damage. The other options are unrelated to this specific physical finding.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a newborn diagnosed with congenital adrenal hyperplasia (CAH), you would MOST likely observe which of the following findings?
सही उत्तर: घ) Adrenal androgen excess
Congenital Adrenal Hyperplasia results from a deficiency in cortisol synthesis leading to adrenal gland overproduction of androgens. This manifests as virilization, clitoral enlargement, accelerated growth, and skin hyperpigmentation. Increased androgen levels are the core feature of CAH.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 32-year-old woman presents with a positive urine pregnancy test and reports experiencing severe abdominal pain, vaginal bleeding, and signs of preterm labor at 28 weeks gestation. What is the MOST appropriate initial management?
सही उत्तर: घ) Observation and close monitoring
At 28 weeks gestation, the primary goal is to preserve fetal lung development. Observation with close monitoring allows assessment of fetal well-being while administering corticosteroids to accelerate fetal lung maturation – a crucial intervention in this situation. Magnesium sulfate focuses on maternal seizure control rather than early fetal outcomes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A newborn presents with marked cyanosis, respiratory distress, and a systolic murmur. Which of the following conditions is MOST likely?
सही उत्तर: ख) Classic phenylketonuria
Classic phenylketonuria (PKU) results from a deficiency in tetrahydrobiopterin, which is essential for phenylalanine metabolism. This leads to a buildup of phenylalanine, causing neurological damage and cyanosis due to metabolic acidosis – the hallmark of PKU. The other options are related to respiratory issues or prematurity but don't explain the core physiological mechanisms.
💬 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
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