[The heterogeneous local regulation of the tonus of the precapillary vessels and major arteries of the forearm during reactive hyperemia].
Blood flow in human forearm and arterial pressure gradient in conduit arteries of forearm were studied during reactive hyperemia caused by arterial occlusion for 1, 3, 5, 15 and 30 min. The mechanisms of tonus formation and regulation of these vessels are heterogeneous. The precapillary vessels dilate during arterial occlusion whereas conduit arteries dilate only after restoration of free blood flow during early phase of reactive hyperemia as a result of increased flow velocity. The normalisation of resistance of precapillary and conduit arteries during reactive hyperemia also develops independently.
Skards
Ia V
IaV
Matisone
D R
DR
Kukulis
I P
IP
Dzerve
V Ia
VIa
D000328:Adult; D001158:Arteries / Q000502:physiology; D002196:Capillaries / Q000502:physiology; D002200:Capillary Resistance / Q000502:physiology*; D005542:Forearm / Q000098:blood supply*; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D006940:Hyperemia / Q000503:physiopathology*; D012016:Reference Values; D013997:Time Factors; D014111:Tourniquets; D014655:Vascular Resistance / Q000502:physiology*
Geterogennaia mestnaia reguliatsiia tonusa prekapilliarnykh sosudov i magistral'nykh arteriĭ predplech'ia vo vremia reaktivnoĭ giperemii.