Upper motor neuron

UMN vs LMN Lesion

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UMNL vs LMNL #medicalschool #resources #medicalstudent - Image Credits: MedNote Collection

Some of the likely causes of lower motor neuron lesions are motor neuron disease, peripheral neuropathy, and spinal cord injury with nerve root compression.

Lower Motor Neuron Vs. Upper Motor Neuron....confusing to me since grad school....but a visual helps:)

Upper Motor vs. Lower Motor Neuron Disease: All the neurons supplying to the pyramidal and extrapyramidal systems are upper motor neurons (UMN). The

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The somatic nervous system (SNS) is a component of the peripheral nervous system responsible for voluntary movement and the reception of external stimuli. It regulates activities under conscious control, such as skeletal muscle contraction. The SNS comprises motor neurons that activate muscles and sensory neurons that relay information from sensory receptors to the central nervous system.

Decussation: crossing of nerve/nerve signal from one side of the spinal cord to the other at the juncture of the first order neuron to the second order neuron. Results in an impulse originating in my left toe ending up in my right hemisphere. This crossing perhaps is the basis of the criss-crossing of the Ida and Pingala nadis in Yogic anatomy (chakras).