To use all functions of this page, please activate cookies in your browser.
With an accout for my.bionity.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
Upper motor neurone lesion
An upper motor neuron lesion is a lesion of the neural pathway above the anterior horn cell or motor nuclei of the cranial nerves. This is in contrast to a lower motor neurone lesion, which affects nerve fibres travelling from the anterior horn of the spinal cord to the relevant muscle(s).
Additional recommended knowledge
These are the neural tracts which descend in the spinal cord, in the lateral columns, carrying signals for voluntary movement of skeletal muscle. These nerve fibres usually originate in the cerebral cortex, then gather in the internal capsule before crossing over to the opposite side (decussation) in the medulla oblongata and proceeding down the spinal cord to meet lower motor neurones in the anterior horn.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Upper_motor_neurone_lesion". A list of authors is available in Wikipedia.|