Samiksha Jaiswal (Editor)

Falx cerebelli

Updated on
Edit
Like
Comment
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
Part of
  
NeuroNames
  
ancil-259

FMA
  
83974

Latin
  
Falx cerebelli

TA
  
A14.1.01.106

Falx cerebelli

The falx cerebelli is a small sickle shaped fold of dura mater, projecting forwards into the posterior cerebellar notch as well as projecting into the vallecula of the cerebellum between the two cerebellar hemispheres. The name comes from the Latin word falx meaning "curved blade or scythe" and cerebellum meaning "brain". Its base is attached, above, to the under and back part of the tentorium cerebelli; its posterior margin, to the lower division of the vertical crest on the inner surface of the occipital bone. The falx cerebelli generally lies somewhere between 2.8 and 4.5 cm in length and is approximately 1–2 mm thick.

Variations in Morphology

In its lower portion the falx cerebelli diminishes very rapidly in height and as it descends, it can divide into two smaller folds or diverging limbs, which are lost on the sides of the foramen magnum. Other variations such as duplication, triplication, absence, and fenestration are much less common. As dural venous sinuses are concurrent with the development of dural folds, duplication of the falx cerebelli is usually associated with duplicated occipital sinus. Knowledge of these variations is important in preventing iatrogenic injuries in this region.

References

Falx cerebelli Wikipedia


Similar Topics