[The significance of rhythmic contractile activity of the arteries for the regulation of the rate of blood flow].
The effect of rhythmic contractile activity of the rat mesenteric arteries upon the blood flow velocity, was studied. The vasomotion was induced both by a direct stimulation of vascular motor nerves and a nociceptive stimulation. The wave of the vasomotion was shown to spread towards the periphery of the arterial bed irrespective of the way of influencing. The mathematical model of the vessel as a peristaltic pump working against the background of a constant shifting of the pressure with the contraction wave's parameters measured during the experiments, revealed that the blood flow velocity equally depended on the amplitude and the velocity of spreading of the rhythmic contractions. The experiments suggest involvement of the sympathetic nervous system in the control of the vasomotion's parameters and, consequently, of the blood flow velocity in the vessels during latters' rhythmic contractile activity.
Govyrin
V A
VA
Gusev
V M
VM
Iazykov
V V
VV
D000818:Animals; D001783:Blood Flow Velocity; D008433:Mathematics; D008638:Mesenteric Arteries / Q000502:physiology; D008955:Models, Cardiovascular; D009119:Muscle Contraction; D009131:Muscle, Smooth, Vascular / Q000502:physiology*; D010507:Periodicity; D051381:Rats
O znachenii ritmicheskoĭ sokratitel'noĭ aktivnosti arteriĭ dlia reguliatsii skorosti krovotoka.