[The vasomotion characteristics in isolated segment of the tail artery under conditions of slow constant increase of the perfusion pressure].
In vitro, the Wistar rat tail artery segments were perfused with the Crebs-Henselite solution. Under the conditions of perfusion pressure increasing from 0 to 110 mm Hg with the velocity of 5 mm Hg/min, the "diameter-pressure" curves were obtained. Changes in the vessel diameter during increase of pressure in the vessel were accompanied by vasomotions. For the first time, a regularity of the vasomotion direction changes as determined by an increase or decrease of the vessel diameter was established. The increase of the vessel diameter was accompanied by a sequence of its spike-formed decreases, whereas decrease of the vessel diameter was accompanied by a sequence of its spike-formed increases.
Bedrov
Ia A
IaA
Dvoretskiĭ
D P
DP
Cherniavskaia
G V
GV
D000818:Animals; D001158:Arteries / Q000502:physiology; D010477:Perfusion / Q000379:methods; D011312:Pressure; D051381:Rats; D017208:Rats, Wistar; D013623:Tail / Q000098:blood supply*; D014661:Vasoconstriction / Q000502:physiology*; D014664:Vasodilation / Q000502:physiology*