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Pronunciation: ponz, pon'tez


  1. neuroanatom the pons varolii or pons cerebelli; that part of the brainstem between the medulla oblongata caudally and the mesencephalon rostrally, composed of the basilar part of pons and the tegmentum of pons. On the ventral surface of the brain, the basilar part of pons (the white pontine protuberance) is demarcated from both the medulla oblongata and the mesencephalon by distinct transverse grooves.
  2. Any bridgelike formation connecting two more or less disjoined parts of the same structure or organ.

Synonym(s): pons cerebelli, pons varolii

[L. bridge]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.