Aug 14, 2017
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Pre-Medical
Sorry if this is a dumb question but what is the difference between the anterior and the lateral corticospinal tracts? I vaguely remember being told that the LCS innervates distal body parts (eg hands) while the ACS innervates proximal body parts, is this right?

Thanks
 

KVBane

5+ Year Member
Apr 6, 2014
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Resident [Any Field]
Anterior doesnt cross the midline and controls ipsilateral trunk muscles (10% of the neurons of the corticospinal tracts). Lateral corticospinal tract (comprises 90% of neurons of the corticospinal tract) crosses the midline and innervate contralateral limbs