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Tentorial incisure
Tentorial incisure (also known as the tentorial notch or incisura tentorii) refers to the anterior opening between the free edge of the tentorium cerebelli and the clivus for the passage of the brainstem.〔(【引用サイトリンク】title=Incisura tentorii: Definition with Incisura tentorii Pictures and Photos )〕
==Structure==
The tentorial incisure is located between the tentorial edges and communicates the supratentorial and infratentorial spaces. This area can be divided into three spaces: ''anterior'', ''middle'' (lateral to), and ''posterior'' to the brainstem. The middle incisural space is close to the midbrain and the upper pons at the level of the pontomesencephalic sulcus. Mesial temporal lobe structures such as the uncus, the parahippocampal gyrus and the hippocampal formation, are also intimately related to the incisura. The principal vascular structures coursing along the middle incisural space are the posterior cerebral artery and the superior cerebellar artery which pass around the brainstem, parallel to the free tentorial edge. The incisura has also a close relationship with the first 6 cranial nerves.〔Rothon Jr AL. Tentorial incisura. Neurosurgery 2000;47(Suppl. 3):131–53.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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