Falx cerebri

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Not to be confused with falx cerebelli.
Brain: Falx cerebri
Falxcerebri.jpg
Dura mater and its processes exposed by removing part of the right half of the skull and the brain.
Gray769.png
Diagrammatic representation of a section across the top of the skull, showing the membranes of the brain, etc. (Falx cerebri is yellow line running down center.)
Latin Falx cerebri
Gray's p.873
Part of Meninges
NeuroNames ancil-258

The falx cerebri, also known as the cerebral falx, so named from its sickle-like form, is a strong, arched fold of dura mater that descends vertically in the longitudinal fissure between the cerebral hemispheres.

It is narrow in front, where it is attached to the crista galli of the ethmoid; and broad behind, where it is connected with the upper surface of the tentorium cerebelli.

Its upper margin is convex, and attached to the inner surface of the skull in the middle line, as far back as the internal occipital protuberance; it contains the superior sagittal sinus. Its lower margin is free and concave, and contains the inferior sagittal sinus.

The falx cerebri is known to calcify with age.

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This article incorporates text from a public domain edition of Gray's Anatomy.