आधारभूत विज्ञान (Anatomy, Physiology, Biochemistry) – Basic Sciences MCQ
आधारभूत विज्ञान (Anatomy, Physiology, Biochemistry) – MD/MS प्रवेश
Basic Sciences · MECEE-PG – MD/MS/MDS Entrance · ४३३ प्रश्न
४३३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
आधारभूत विज्ञान (Anatomy, Physiology, Biochemistry): 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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The muscle that 'unlocks' the fully extended knee joint is the:
सही उत्तर: ग) Popliteus
Popliteus laterally rotates the femur on the tibia (or medially rotates the tibia) to unlock the knee at the start of flexion. Locking is produced by the terminal medial rotation of the femur during full extension.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The anterior cruciate ligament of the knee primarily prevents:
सही उत्तर: ख) Anterior displacement of the tibia on the femur
The ACL runs from the anterior intercondylar area of the tibia to the lateral femoral condyle and resists forward gliding of the tibia (tested by anterior drawer and Lachman tests). The posterior cruciate ligament resists posterior displacement.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The muscle that initiates abduction of the arm at the shoulder (first ~15°) is the:
सही उत्तर: घ) Supraspinatus
Supraspinatus initiates abduction, after which the deltoid takes over up to about 90°. Infraspinatus and teres minor are lateral rotators of the arm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Wrist drop is characteristically caused by injury to the:
सही उत्तर: ख) Radial nerve
The radial nerve supplies the extensors of the wrist and fingers, so its injury (e.g. in mid-shaft humerus fracture at the spiral groove) produces wrist drop. Ulnar nerve injury causes claw hand instead.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Foot drop most commonly results from injury to the:
सही उत्तर: घ) Common peroneal (fibular) nerve
The common peroneal nerve winds around the neck of the fibula, where it is easily injured, paralysing the dorsiflexors and causing foot drop. Tibial nerve injury instead weakens plantar flexion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Winging of the scapula results from injury to the:
सही उत्तर: क) Long thoracic nerve
The long thoracic nerve (C5–C7) supplies serratus anterior, which holds the scapula against the chest wall; its paralysis causes winging. The thoracodorsal nerve supplies latissimus dorsi and does not cause winging.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Classic galactosemia is caused by deficiency of:
सही उत्तर: ख) Galactose-1-phosphate uridyltransferase
Classic galactosemia is due to deficiency of galactose-1-phosphate uridyltransferase (GALT).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Most of the filtered sodium is reabsorbed in the:
सही उत्तर: क) Proximal convoluted tubule
About two-thirds of filtered Na⁺ is reabsorbed in the proximal convoluted tubule.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Erb's palsy results from injury to which roots of the brachial plexus?
सही उत्तर: घ) C5 and C6
Erb's palsy is an upper trunk (C5, C6) injury producing the 'waiter's tip' position.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Wernicke encephalopathy results from deficiency of:
सही उत्तर: ग) Thiamine (vitamin B₁)
Thiamine deficiency, typically in alcoholics, causes Wernicke encephalopathy.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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