Everything about The Cerebral Peduncle totally explained
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. By this definition, the cerebral peduncles are also known as the
basis pedunculi, while the large ventral bundle of efferent fibers is referred to as the
crus cerebri or the
pes pedunculi 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.
In as much 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.
Important fibers running through the cerebral peduncles include the
corticospinal tract and the
corticobulbar tract, among others.
Additional images
Image:Gray677.png|Scheme showing the connections of the several parts of the brain.
Image:Gray682.png|Superficial dissection of brain-stem. Lateral view.
Image:Gray683.png|Dissection of brain-stem. Lateral view.
Image:Gray684.png|Deep dissection of brain-stem. Lateral view.
Image:Gray705.png|Dissection showing the projection fibers of the cerebellum.
Image:Gray720.png|Median sagittal section of brain.
Image:Gray773.png|The left optic nerve and the optic tracts.
Image:Gray792.png|Upper part of medulla spinalis and hind- and mid-brains; posterior aspect, exposed in situ.
Image:Human brainstem anterior view 2 description.JPG|Human brainstem anterior view
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