The 'cerebral peduncle', by most classifications, is everything in the
mesencephalon except the tectum. The region includes the
midbrain tegmentum,
crus cerebri,
substantia nigra and
pretectum. The peduncles are also known as the 'crus cerebri'. There are numerous nerve tracts located within this section of the brainstem. Of note, in the ''cerebral peduncular loop'' fibers from motor areas of the brain project to the cerebral peduncle and then project to various
thalamic nuclei.
Inasmuch as the peduncles are an anatomic landmark, for details regarding the function of this area interested readers are referred to the individual referenced articles. On a broad scale, though, this area contains many nerve tracts conveying motor information to and from the brain to the rest of the body.
Additional images
See also
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Regions in the human brain
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Diagram
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Diagram
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