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Internal capsule (A) and MRIs through internal capsule (B) and midbrain (C). The locations of the descending axons in the internal capsule and basis
pedunculi are shown on the MRIs. The letters "FATL" abbreviate Face, Arm, Trunk, and Leg. In the midbrain, the descending cortical fibers (filled middle
region in basis pedunculi) are flanked on either side by axons that originate in the cortex and synapse on neurons in the pontine nuclei (see Chapter 13).
Within the filled regions, the order of descending axons are, from medial to lateral, face, arm, trunk, leg. Planes of section of MRIs in parts B and C are
indicated in A. (B, C, Courtesy of Dr. Joy Hirsch, Columbia University.)
Source: Cranial Nerve Motor Nuclei and Brain Stem Motor Functions, Neuroanatomy Text and Atlas, 4e
Citation: Martin JH. Neuroanatomy Text and Atlas, 4e; 2016 Available at: http://mhmedical.com/ Accessed: May 14, 2017
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