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CORTICONUCLEAR FIBERS

Anatomy-Spine

CORTICONUCLEAR FIBERS

1. Intro - innervate the brainstem nuclei, hence cortico-nuclear.
2. Function - for voluntary movement of the face.
3. Origin - from layer V (ganglionic layer) of Ms1 area.
4. Internal capsule - passes through the genu.
5. Supply - some synapse onto the occulomotor + trochlear nuclei. Others collect in the medial part of the central crus of the midbrain peduncle from which they reach the rest of the brainstem.
6. Misc - CN nuclei which innervate skeletal muscles do so bilaterally, except for the lower part of the face (which is innervated by contralateral UMN nucleus).


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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