cephalization

/S EH1 F AH0 L IH0 Z EY1 SH AH0 N/
noun
  1. 1

    An evolutionary trend in which the neural and sense organs become centralized at one end (the head) of an animal.

  2. 2

    The redistribution of blood flow from the base of the lung towards the upper lobe vessels as a consequence of pulmonary venous hypertension, usually described on a chest radiograph.

Source: https://en.wiktionary.org/wiki/cephalization