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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Which of the following statements accurately describes the function of the sino-atrial node (SA node)?
सही उत्तर: क) It initiates the spread of electrical impulses throughout the heart
The SA node is known as the 'pacemaker' of the heart. It spontaneously depolarizes, initiating the electrical impulse that triggers each heartbeat. The other options describe other functions within the cardiovascular system.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following anatomical structures is primarily responsible for the production of intrinsic factor required for gastric acid absorption?
सही उत्तर: ख) Parietal cells of the stomach
Parietal cells, located in the gastric mucosa, secrete intrinsic factor. This protein is crucial for the absorption of vitamin B12 by the ileum. The other options represent different cell types or structures within the stomach involved in acid production and digestion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary function of the Wharton’s duct is: (a) Drainage of lymph from the pelvic viscera. (b) Secretion of colostrum during lactation. (c) Delivery of milk to the infant's mouth. (d) Absorption of fat in the small intestine.
सही उत्तर: ग) (c) Delivery of milk to the infant’s mouth.
Option (c) is correct because the Wharton's duct, located in the breasts, carries milk from the alveoli to the nipple for delivery to the infant. Options (a), (b), and (d) describe other functions or structures within the mammary gland system.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 6-year-old child presents with recurrent episodes of vomiting and diarrhea leading to dehydration. Examination reveals evidence of malabsorption, steatorrhea, and weight loss. Which of the following conditions is MOST likely? (a) Celiac Disease. (b) Lactose Intolerance. (c) Cystic Fibrosis. (d) Viral Gastroenteritis
सही उत्तर: क) (a) Celiac Disease.
Option (a) is correct. The clinical presentation—recurrent episodes of vomiting and diarrhea, malabsorption, steatorrhea, and weight loss—is highly suggestive of Celiac Disease. Options (b), (c), and (d) are less likely considering the complex symptoms and associated findings.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the context of prenatal diagnosis, what does 'selective reduction' refer to? (a) The complete termination of the pregnancy due to severe fetal abnormalities. (b) The reduction of placental volume to alleviate maternal discomfort. (c) The reduction of fetal growth rate through dietary modifications for the mother. (d) The selective extraction of a single embryo during IVF cycles.
सही उत्तर: ख) (b) The reduction of placental volume to alleviate maternal discomfort.
Option (a) is correct. Selective reduction refers specifically to the termination of a pregnancy due to severe fetal abnormalities, typically after detailed genetic or anatomical assessments. Options (b), (c), and (d) describe unrelated procedures.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A newborn infant presents with a heart rate of 180 bpm, tachypnea, and a bounding pulse. Auscultation reveals harsh systolic ejection murmurs. Which of the following conditions is MOST likely? (a) Tetralogy of Fallot. (b) Coarctation of the Aorta. (c) Atrial Septal Defect (ASD). (d) Ventricular Septal Defect (VSD).
सही उत्तर: घ) (d) Ventricular Septal Defect (VSD).
Option (c) is correct as ASD in newborns typically presents with rapid heart rate and ejection murmurs due to increased blood flow. Options (a), (b), and (d) are congenital heart defects, but do not classically present with such a high heart rate.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following best describes the primary mechanism of action of Meconium Aspiration Syndrome (MAS)? (a) Severe respiratory distress due to pulmonary edema. (b) Hypoxemia resulting from impaired oxygen exchange across alveolar-capillary membranes caused by meconium obstruction. (c) Bronchospasm triggered by hyperinflation of the lungs. (d) Pneumonia secondary to aspiration of gastric contents.
सही उत्तर: ख) (b) Hypoxemia resulting from impaired oxygen exchange across alveolar-capillary membranes caused by meconium obstruction.
Option (b) is correct because meconium blocks the airways, leading to hypoxia. Options (a), (c), and (d) represent alternative causes or complications of respiratory distress in newborns which are not the primary mechanism of MAS.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following cell types is primarily responsible for synthesizing collagen within tendons? (a) Osteoblasts (b) Fibroblasts (c) Chondrocytes (d) Erythrocytes
सही उत्तर: ख) (b) Fibroblasts
Collagen synthesis is the main function of fibroblasts and osteoblasts. However, in tendons collagen is produced by fibroblasts. Osteoblasts are bone-forming cells, chondrocytes reside in cartilage and erythrocytes transport oxygen.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A patient presents with symptoms of muscle weakness, respiratory distress, and a metabolic acidosis. Blood tests reveal elevated levels of lactic acid. Which biochemical pathway is most likely impaired? (a) Glycolysis (b) Krebs Cycle (Citric Acid Cycle) (c) Electron Transport Chain (d) Urea Cycle
सही उत्तर: ग) (c) Electron Transport Chain
The buildup of lactic acid indicates a disruption in the electron transport chain, leading to anaerobic metabolism. This option accurately describes the consequence of a malfunctioning ETC. Glycolysis is linked to it but does not cause acidosis and the urea cycle handles nitrogenous waste.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following enzymes plays a crucial role in the regulation of blood glucose levels by catalyzing the breakdown of glycogen? (a) Amylase (b) Lipase (c) Catalase (d) Glycogen phosphorylase
सही उत्तर: घ) (d) Glycogen phosphorylase
Glycogen phosphorylase specifically breaks down glycogen into glucose. Amylase digests starch, lipase breaks down fats and catalase is an enzyme that degrades hydrogen peroxide. This is the correct answer.
💬 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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