Brain, Meninges & CSF Anatomy
Falx cerebri
The falx cerebri is the sickle-shaped fold of dura that dips down between the brain's two halves.
In short: Falx cerebri
- It is a fold of the dura mater.
- It partially separates the brain's two halves.
- It is part of the supporting membrane architecture inside the skull.
- It works alongside the tentorium to compartmentalize the brain.
What it is
It is a sickle-shaped fold of the dura mater that dips down into the midline between the brain's two halves. It is part of the dural folds that support and partition the brain.
Understanding Falx cerebri
Along with the tentorium, the falx is part of the dural folds that compartmentalize the brain inside the skull. These folds help support the brain and define internal compartments, which is part of the normal architecture surgeons and radiologists reference.
Why it matters
Understanding the falx helps families recognize a normal anatomical structure they may see mentioned on imaging, and how the dural folds organize the inside of the skull.
Common questions
What is the falx made of?
Dura mater.
What does it separate?
The brain's two halves.
What does it work alongside?
The tentorium cerebelli.
Bottom line
The falx cerebri is a dural fold dipping between the brain's halves.
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