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Median aperture

Structure within the human brain

Median aperture
Summary

Structure within the human brain

FieldValue
NameMedian aperture
Latinapertura mediana
ImageGray708.svg
CaptionScheme of roof of fourth ventricle. The arrow is in the median aperture.

The median aperture (median aperture of fourth ventricle or foramen of Magendie) is an opening at the caudal portion of the roof of the fourth ventricle. It allows the flow of cerebrospinal fluid (CSF) from the fourth ventricle into the cisterna magna. The other openings of the fourth ventricle are the lateral apertures - one on either side. The median aperture varies in size but accounts for most of the outflow of CSF from the fourth ventricle.

Structure

Relations

The median foramen on axial images is posterior to the pons and anterior to the caudal cerebellum. It is surrounded by the obex and gracile tubercles of the medulla, tela choroidea of the fourth ventricle and its choroid plexus, which is attached to the cerebellar vermis.

Eponym

The foramen of Magendie is named for François Magendie, who first described it. The term "foramen of Magendie" is commonly used, and this opening is frequently described and illustrated as a foramen in the inferior roof of the fourth ventricle. However, the opening is an aperture, rather than a foramen.

CSF circulation

Additional images

File:Slide3qq.JPG|Median aperture

References

References

  1. Waxman, Stephen G.. (2009). "Clinical Neuroanatomy". McGraw-Hill Medical.
  2. Johns, Paul. (2014). "Clinical Neuroscience". Elsevier.
  3. (2016). "Complications in Neuroanesthesia". Elsevier.
  4. (2011). "Median aperture of the fourth ventricle revisited.". Folia Morphol..
  5. Spierer, Ronen. (2023). "The debated neuroanatomy of the fourth ventricle". Journal of Anatomy.
  6. {{WhoNamedIt. synd. 2388
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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