premedullary cistern

premedullary cistern
a subarachnoid cistern sometimes recognized separately, lying ventral to the medulla oblongata and continuous caudally with the spinal subarachnoid space. It contains the terminal part of the vertebral artery, the anterior spinal artery, and the anterior medullary vein.

Medical dictionary. 2011.

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  • cisterna pontis — cisterna pontocerebellaris [TA] pontine cistern: a large space ventral to the pons, continuous posteriorly with the cisterna magna and rostrally with the interpeduncular cistern; the basilar artery runs through it. It may be considered to be… …   Medical dictionary

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