Blood flow velocity--a constantly acting factor in dilatation of the large arteries
Mel'kumiants, A.M.; Balashov, S.A.
Biulleten' Eksperimental'noi Biologii i Meditsiny 99(1): 110-113
1985
ISSN/ISBN: 0365-9615 PMID: 3155629 Document Number: 262688
Acute experiments on cats have demonstrated the presence of renal artery sensitivity to the bloodstream velocity; the artery is enlarged with the blood flow increase and is narrowed with its decrease. The dilatation of the artery caused by the double increase of the blood flow (from 20 to 40 ml/min) is 23 +/- 8%. It has been established experimentally that carotid, femoral and renal arteries of cats respond to minor changes (of the order of 1 ml/min) in the volumetric velocity of the bloodstream by changing their diameters. Therefore, the arteries continuously follow the bloodstream velocity changes by changing their diameters. It may thus be concluded that the bloodstream itself is the artery dilatation factor.