What is the tentorium of the brain?
The tentorium cerebelli is an invagination of dura mater that separates the occipital and temporal lobes of the cerebrum from the cerebellum and brainstem. Protects the cerebellum and infratentorial brainstem from pressure by suspending the lobes of the brain.
Table of Contents
What is the tentorium of the brain?
The tentorium cerebelli is an invagination of dura mater that separates the occipital and temporal lobes of the cerebrum from the cerebellum and brainstem. Protects the cerebellum and infratentorial brainstem from pressure by suspending the lobes of the brain.
Where is the tentorial hiatus?
The tentorial incisura is located between the tentorial edges and is the only site of communication behind the supra and infratentorial spaces. The tentorial apex is located at the junction of the vein of Galen and the straight sinus. The tentorial edges slope downward from the apex.
What is the clinical significance of the tentorial notch?
Clinical significance This is referred to as a tentorial brain herniation. The consequences are unconsciousness, widening of the pupil of the affected side, and hemiparesis on the opposite side.
What is tentorial tear?
Definition. Disruption of the tentorium cerebelli incurred during delivery. [
What is the function of tentorium cerebelli?
Another, the tentorium cerebelli, provides a strong, membranous roof over the cerebellum. A third, the falx cerebelli, projects downward from the tentorium cerebelli between the two cerebellar hemispheres. The outer portion of the dura mater over the brain serves as a covering, or periosteum, of the inner…
What part of the brain lies above the tentorium?
The cerebellar tentorium or tentorium cerebelli (Latin for “tent of the cerebellum”) is an extension of the dura mater that separates the cerebellum from the inferior portion of the occipital lobes….
| Cerebellar tentorium | |
|---|---|
| Cerebellar tentorium seen from above. | |
| Details | |
| Part of | Meninges |
| Identifiers |
Is brainstem herniation reversible?
Prior to brainstem involvement, both uncal and central herniation can be fully reversible, particularly with etiologies, such as extradural and subdural hematoma.
Can uncal herniation be reversed?
Uncal herniation can is reversible if recognized early and treated aggressively.
What lies directly above tentorium?
The upper surface of the tentorium is continuous with the dura of the floor of the middle cranial fossa. In the midline, the tentorium is attached to the other major partition, the falx, which we’ll add to the picture. This is the falx. Its full name is falx cerebri.
What does the tentorium cerebelli separate?
Anatomy. The tentorium cerebelli, the second-largest dural reflection, is a crescent-shaped dura fold that extends over the posterior cranial fossa, separating the occipital and temporal cerebral hemisphere from the cerebellum and infratentorial brainstem [1,6].
What is uncal?
Uncal (Transtentorial) Herniation. The uncus is the most medial part of the temporal lobe. When it is squeezed against the tentorium, it exerts pressure on the third cranial (oculomotor) nerve as it leaves the midbrain and travels along the free edge of the tentorium.
Is subdural hematoma intracerebral or intracranial?
Intracranial hemorrhage encompasses four broad types of hemorrhage: epidural hemorrhage, subdural hemorrhage, subarachnoid hemorrhage, and intraparenchymal hemorrhage.
