Vasomotion is the spontaneous oscillation in tone of blood vessels, independent of heart beat, innervation or respiration. While vasomotion was first observed by Jones in 1852, the complete mechanisms responsible for its generation and its physiological importance remain to be elucidated, however several hypotheses have been put forth. ==Mechanism...
Change in caliber of a blood vessel. ... Synonym: angiokinesis. ... (05 Mar 2000) ... 
(va″zo-) (vas″o-mo´shәn) change in caliber of blood vessels.
Type: Term Pronunciation: vā′sō-mō′shŭn, vas-ō- Definitions: 1. Change in caliber of a blood vessel.
vasomotion A change or alteration in the caliber of a blood vessel. Also called angiokinesis.