चिकित्सा शिक्षा आयोग (CEE) एमबीबीएस प्रवेश परीक्षा तयारी
चिकित्सा शिक्षा आयोग (CEE) – एमबीबीएस प्रवेश परीक्षा
CEE – MBBS Entrance · Medical Education Commission – CEE
२,०३९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
MBBS/BDS/Nursing 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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Surfactant in the alveoli functions to:
सही उत्तर: ख) Reduce surface tension and prevent alveolar collapse
Surfactant, secreted by type II alveolar cells, lowers surface tension and keeps alveoli from collapsing during expiration. Its deficiency in premature infants causes respiratory distress syndrome.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The respiratory rhythm centre is located in the:
सही उत्तर: क) Medulla oblongata
The rhythm centre in the medulla sets the basic breathing pattern, while the pneumotaxic centre in the pons modifies it. The cerebellum coordinates movement, not breathing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The volume of air remaining in the lungs after maximum forceful expiration is called:
सही उत्तर: घ) Residual volume
Residual volume (about 1100-1200 mL) cannot be expelled even by forceful expiration. Vital capacity is the maximum air exhaled after a maximum inspiration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A rise in CO2 concentration shifts the oxygen-haemoglobin dissociation curve to the right. This is known as:
सही उत्तर: ग) Bohr effect
The Bohr effect lowers haemoglobin's oxygen affinity in tissues with high CO2 and H+, aiding O2 unloading. The Haldane effect concerns how oxygenation of Hb promotes CO2 release.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The movement of chloride ions into RBCs in exchange for bicarbonate is called:
सही उत्तर: ख) Chloride shift (Hamburger phenomenon)
As bicarbonate leaves the RBC, chloride enters to maintain electrical neutrality; this is the chloride (Hamburger) shift. The Bohr effect is the decrease in Hb's O2 affinity with high CO2 or low pH.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The enzyme carbonic anhydrase is found in high concentration in:
सही उत्तर: क) Red blood cells
Carbonic anhydrase in RBCs rapidly converts CO2 and water into carbonic acid, which dissociates to bicarbonate. Its activity in plasma is minimal.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The major form in which carbon dioxide is transported in the blood is:
सही उत्तर: घ) Bicarbonate ions
About 70% of CO2 is carried as bicarbonate formed with the help of carbonic anhydrase in RBCs. Roughly 20-25% travels as carbaminohaemoglobin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Most of the oxygen in blood is transported as:
सही उत्तर: ग) Oxyhaemoglobin
About 97% of oxygen is carried bound to haemoglobin as oxyhaemoglobin; only about 3% is dissolved in plasma. Bicarbonate is the main form of CO2 transport.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The primary site of absorption of digested food is the:
सही उत्तर: ख) Small intestine (ileum and jejunum)
Villi and microvilli of the small intestine provide the large surface needed for absorption of nutrients. The large intestine mainly absorbs water and salts.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Kwashiorkor is mainly due to deficiency of:
सही उत्तर: क) Protein
Kwashiorkor results from protein deficiency despite adequate calories, causing oedema and a swollen belly. Marasmus results from overall protein-energy deficiency.
💬 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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