Discuss the concept of an “upper motor neuron” vs a “lower motor neuron”. List all the...

90.2K

Verified Solution

Question

Medical Sciences

Discuss the concept of an “upper motor neuron” vs a “lower motorneuron”. List all the neurons and their motor system pathways thatmight be considered upper motor neurons. Describe the consequencesof a lesion to an upper motor neuron and a lower motor neuron. Thisanswer should address issues of muscle tone, reflexes, and anyother characteristics that help to differentiate between upper andlower motor neuron lesions. Give some common examples (i.e.diseases, dysfunctions, trauma) when these respective lesions wouldoccur. What is the prognosis for recovery from UMN and LMN lesions.What are the differences between spasticity, rigidity, decerebraterigidity and decorticate rigidity?

Answer & Explanation Solved by verified expert
4.1 Ratings (635 Votes)
somatic motor pathways involve at least two motor neurons an upper motor neuron and a lower motor neuron 1upper motor neuron Vs lower motor neuron An upper motor neuron whose cell body lies in a central nervous system processing center and a lower motor neuron whose cell body lies in a nucleus of the brain stem as it relates to cranial nerves or in the spinal cord as it relates to peripheral nerves The upper motor neuron synapses on the lower motor neuron and innervates a single motor unit in a skeletal muscle Activity in the upper motor neuron may facilitate or inhibit the lower motor neuron Activation of the lower motor neuron triggers a    See Answer
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students