Falx cerebri

Falx cerebri
Dura mater and its processes exposed by removing part of the right half of the skull and the brain.
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.)
Details
Part of	Meninges
Identifiers
Latin	Falx cerebri
NeuroNames	ancil-258
TA	A14.1.01.103
FMA	83967
Anatomical terms of neuroanatomy []

The falx cerebri is also known as the cerebral falx, named from its sickle-like form. It is a large, crescent-shaped fold of meningeal layer of dura mater that descends vertically in the longitudinal fissure between the cerebral hemispheres of the human brain. The falx cerebri attaches anteriorly at the crista galli in proximity to the cribriform plate and to the frontal and ethmoid sinuses. Posteriorly, it is connected with the upper surface of the tentorium cerebelli. Its superior margin is attached at midline to internal surface of skull, as far back as the internal occipital protuberance. The superior sagittal sinus is contained in the superior margin of the falx cerebri and overlies the longitudinal fissure of the brain. The inferior sagittal sinus is contained in the inferior margin of the falx cerebri and arches over the corpus callosum, deep in the longitudinal fissure.

Calcification of the falx cerebri is more prevalent in older patients, often without a determinable cause, and without pathogenic symptoms.

Falcine meningioma is a meningioma arising from the falx cerebri and completely concealed by the overlying cortex. Falcine meningioma tends to grow predominately into one cerebral hemisphere but is often bilateral, and in some patients the tumor grows into the inferior edge of the sagittal sinus. However, although much information is available regarding meningiomas, little is known about falcine meningiomas.

Falx cerebri in relation to the skull.

Frontal bone. Inner surface.

Sagittal section of the skull, showing the sinuses of the dura.

Human brain dura mater (reflections)

Falx cerebri

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)