What is a Tentorial tear?
Definition. Disruption of the tentorium cerebelli incurred during delivery. [ from NCI]
What is the tentorium of the brain?
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].
Where does the FALX cerebri attach?
crista galli
The falx cerebri is relatively thin anteriorly where it attaches to the crista galli of the ethmoid bone, but is broader posteriorly where it attaches to the superior surface of the tentorium cerebelli inferiorly 1,2.
Where is the tentorium?
The cerebellar tentorium is an arched lamina, elevated in the middle, and inclining downward toward the circumference. It covers the top of the cerebellum, and supports the occipital lobes of the brain.
What is the Tentorial opening?
The tentorial notch (also known as the tentorial incisure or incisura tentorii) refers to the anterior opening between the free edge of the cerebellar tentorium and the clivus for the passage of the brainstem. The midbrain continues with the thalamus of the diencephalon through the tentorial notch.
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.
Why is falx cerebri important?
The falx cerebri separates the cerebral hemispheres and houses the dural sinuses, into which the blood and cerebrospinal fluid drain. The function of the falx cerebri may be to constrain the brain and limit its displacement and rotation inside the cranium.
What are falx cerebri made of?
Anatomical terms of neuroanatomy The falx cerebri, also known as the cerebral falx, 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.
What is the clinical importance of the tentorial notch?
Midbrain passes through the tentorial notch and this notch provides the only communication between the supratentorial and infratentorial compartments. The area between the brainstem and free tentorial edge is divided into the anterior, middle, and posterior incisural spaces.
Can uncal herniation be reversed?
Uncal herniation can is reversible if recognized early and treated aggressively.
What passes through the tentorial notch?
Where is the tentorial notch?
The tentorial notch refers to the anterior opening between the free edge of the tentorium cerebelli and theclivus for the passage of the brainstem. It’s located between the tentorial edges and communicates the supratentorial and infratentorial spaces.
