Pyramidal syndrome - Definition

December 2016


Definition


A pyramidal syndrome attacks the pyramidal tracts, the neural pathways controlling voluntary movement. This pathway begins in the central nervous system, then continues to the spinal cord. Here a synapse, a message passed between neurons, transmits the neural impulse to a motor neuron, which directly acts on the muscle via the neuromuscular junction where the command to contract the muscle is given. When there are lesions on a part of this system, for example in cases of brain lesions caused by stroke, such as in hemiplegia, this can lead to a pyramidal syndrome. This condition typically manifests as motor impairment, a type of contraction described as spastic or elastic hypertonia, and exaggerated tendon reflex.

Related

Original article published by . Translated by Jeff. Latest update on November 12, 2013 at 04:30 AM by Jeff.
This document, titled "Pyramidal syndrome - Definition," is available under the Creative Commons license. Any copy, reuse, or modification of the content should be sufficiently credited to CCM Health (health.ccm.net).