tentorial notch

tentorial notch
tentorial notch n an oval opening that is bounded by the anterior border of the tentorium cerebelli, that surrounds the midbrain, and that gives passage to the posterior cerebral arteries called also tentorial incisure

* * *

incisura tentorii cerebelli.

Medical dictionary. 2011.

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Look at other dictionaries:

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  • transtentorial herniation — protrusion of brain structures through the tentorial notch; the two types are descending transtentorial h. and ascending transtentorial h. Called also tentorial h …   Medical dictionary

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  • descending transtentorial herniation — the most common kind of transtentorial herniation, with downward displacement of the most medially placed cerebral structures through the tentorial notch, compressing parts of the cerebrum and structures beneath the notch; it is caused by a… …   Medical dictionary

  • Pupil — The opening of the iris. The pupil may appear to open (dilate) and close (constrict) but it is really the iris that is the prime mover; the pupil is merely the absence of iris. The pupil determines how much light is let into the eye. Both pupils… …   Medical dictionary

  • tentorium — A membranous cover or horizontal partition. [L. tent, fr. tendo, to stretch] t. cerebelli [TA] a strong fold of dura mater roofing over the posterior cranial fossa with an anterior median opening, the tentorial …   Medical dictionary

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