Posterior perforated substance

From WikiMD's Wellness Encyclopedia

(Redirected from Substantia perforata posterior)

Gray717.png
Human brainstem anterior view 2 description.JPG

Posterior perforated substance

The posterior perforated substance is a region of the brain located in the midbrain, specifically in the interpeduncular fossa. It is characterized by numerous small openings through which blood vessels pass, giving it a perforated appearance. This area is also known as the substantia perforata posterior.

Anatomy[edit | edit source]

The posterior perforated substance is situated between the cerebral peduncles and is bordered by the mammillary bodies anteriorly and the pons posteriorly. It is part of the diencephalon and plays a crucial role in the vascular supply to the brain.

Function[edit | edit source]

The primary function of the posterior perforated substance is to allow the passage of blood vessels that supply the deeper structures of the brain, including the thalamus and the hypothalamus. These blood vessels are branches of the posterior cerebral artery and the basilar artery.

Clinical Significance[edit | edit source]

Lesions or damage to the posterior perforated substance can lead to significant neurological deficits due to its role in vascular supply. Conditions such as stroke or aneurysm in this area can affect the blood flow to critical brain regions, leading to symptoms such as vision problems, motor dysfunction, and cognitive impairment.

Related Structures[edit | edit source]

See Also[edit | edit source]

References[edit | edit source]

External Links[edit | edit source]

WikiMD
Navigation: Wellness - Encyclopedia - Health topics - Disease Index‏‎ - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes

Search WikiMD

Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD

WikiMD's Wellness Encyclopedia

Let Food Be Thy Medicine
Medicine Thy Food - Hippocrates

Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.

Contributors: Prab R. Tumpati, MD