Falx cerebelli | |
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![]() Falx cerebelli seen in back portion of skull. | |
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Occipital bone. Inner surface. (Portions "for faulx cerebelli" identified at center left.) | |
Details | |
Part of | Meninges |
Identifiers | |
Latin | falx cerebelli |
NeuroNames | 1238 |
TA98 | A14.1.01.106 |
TA2 | 5377 |
FMA | 83974 |
Anatomical terms of neuroanatomy |
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. [1]
The name comes from two Latin words: falx, meaning "curved blade or scythe", and cerebellum, meaning "little brain". [2]
The falx cerebelli is a small midline fold of dura mater projecting anterior-ward from the skull and into the space between the cerebellar hemispheres. [3] It generally measures between 2.8 and 4.5 cm in length, and approximately 1–2 mm in thickness. [4]
Superiorly, it (with its upwardly directed base) attaches at the midline to the posterior portion of the inferior surface of the tentorium cerebelli. [3]
Posteriorly, it attaches to the internal occipital crest; the inferior-most extremity of its posterior attachment frequently divides into two small folds that terminate at either side of the foramen magnum. [3]
The occipital sinus is contained within the posterior extremity of the falx cerebelli where it attaches to the internal occipital crest. [3]
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, [5] which are lost on the sides of the foramen magnum. Other variations such as duplication, [6] triplication, [7] absence, [8] 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. [9] Knowledge of these variations is important in preventing iatrogenic injuries in this region.[ citation needed]
Falx cerebelli | |
---|---|
![]() Falx cerebelli seen in back portion of skull. | |
![]()
Occipital bone. Inner surface. (Portions "for faulx cerebelli" identified at center left.) | |
Details | |
Part of | Meninges |
Identifiers | |
Latin | falx cerebelli |
NeuroNames | 1238 |
TA98 | A14.1.01.106 |
TA2 | 5377 |
FMA | 83974 |
Anatomical terms of neuroanatomy |
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. [1]
The name comes from two Latin words: falx, meaning "curved blade or scythe", and cerebellum, meaning "little brain". [2]
The falx cerebelli is a small midline fold of dura mater projecting anterior-ward from the skull and into the space between the cerebellar hemispheres. [3] It generally measures between 2.8 and 4.5 cm in length, and approximately 1–2 mm in thickness. [4]
Superiorly, it (with its upwardly directed base) attaches at the midline to the posterior portion of the inferior surface of the tentorium cerebelli. [3]
Posteriorly, it attaches to the internal occipital crest; the inferior-most extremity of its posterior attachment frequently divides into two small folds that terminate at either side of the foramen magnum. [3]
The occipital sinus is contained within the posterior extremity of the falx cerebelli where it attaches to the internal occipital crest. [3]
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, [5] which are lost on the sides of the foramen magnum. Other variations such as duplication, [6] triplication, [7] absence, [8] 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. [9] Knowledge of these variations is important in preventing iatrogenic injuries in this region.[ citation needed]