autoregulation

noun
au·to·reg·u·la·tion | \ˌȯt-ō-ˌreg-yə-ˈlā-shən \

Medical Definition of autoregulation 

: the maintenance of relative constancy of a physiological process by a bodily part or system under varying conditions especially : the maintenance of a constant supply of blood to an organ in spite of varying arterial pressure the influence of vasoactive agents on autoregulation of renal flow Science

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