10. UMN Lesion vs LMN Lesion ๐ง โก | Motor Nervous System Differences & Clinical Correlations
๐๐๐ผ๐ถ๐ป ๐ข๐๐ฟ ๐ง๐ฒ๐น๐ฒ๐ด๐ฟ๐ฎ๐บ ๐๐ต๐ฎ๐ป๐ป๐ฒ๐น ๐๐ฒ๐ฟ๐ฒ:- https://t.me/bhanuprakashdr ๐ ๐ ๐จ๐ฅ๐ฅ๐จ๐ฐ ๐จ๐ง ๐๐ง๐ฌ๐ญ๐๐ ๐ซ๐๐ฆ:- ย ย /ย drgbhanuprakashย ย ๐๐ฆ๐๐ฏ๐๐ฐ๐ฟ๐ถ๐ฏ๐ฒ ๐ง๐ผ ๐ ๐ ๐ ๐ฎ๐ถ๐น๐ถ๐ป๐ด ๐๐ถ๐๐:- https://linktr.ee/DrGBhanuprakash UMN Lesion vs LMN Lesion ๐ง โก | Motor Nervous System Differences & Clinical Correlations Upper motor neuron (UMN) and lower motor neuron (LMN) lesions are among the most frequently tested and clinically important concepts in motor nervous system physiology, and this lecture explains their differences in a clear, exam-oriented manner ๐ง ๐. UMN lesions involve damage to motor pathways above the anterior horn cell, commonly affecting the corticospinal tract, and are characterized by spastic paralysis, increased muscle tone, exaggerated deep tendon reflexes, clonus, extensor plantar response (Babinski sign), and minimal muscle wasting โก. In contrast, LMN lesions result from damage to the anterior horn cell, nerve root, peripheral nerve, or neuromuscular junction, producing flaccid paralysis, decreased muscle tone, absent or reduced reflexes, marked muscle wasting, fasciculations, and a flexor plantar response ๐ฅ. The lecture correlates these findings with underlying physiology such as loss of inhibitory control in UMN lesions and denervation effects in LMN lesions, helping students understand why tone and reflexes behave differently. Common clinical examples like stroke and spinal cord injury for UMN lesions, and poliomyelitis, peripheral neuropathy, and motor neuron disease for LMN lesions are discussed to reinforce lesion localization. By integrating pathway anatomy, physiological mechanisms, and bedside signs, this session builds strong conceptual clarity essential for MBBS theory exams, viva voce, MCQs, and neurological examination โค๏ธโจ. #Physiology #Neurophysiology #MotorNervousSystem #UMNLesion #LMNLesion #CorticospinalTract #UpperMotorNeuron #LowerMotorNeuron #SpasticParalysis #FlaccidParalysis #BabinskiSign #Fasciculations #MuscleTone #Reflexes #LesionLocalization #ClinicalPhysiology #MBBS #MBBS1stYear #MedicalEducation #LectureSeries #UniversityExams #VivaVoce #HighYield #ConceptualMedicine #DrBhanuPrakash #DrGBhanuPrakash
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