[Capacity and exchange functions of the kidney blood vessels at various leveles of venous outflow].
In perfusion of the cat hemodynamically isolated kidney with a constant blood flow volume, responses of venous vessels to noradrenaline did not depend on the venous outflow pressure level and only involved a diminishing of the blood filling which distinguishes kidneys from other organs. The renal veins' capacity decreased in response to noradrenaline practically completely disappears in high values of the venous outflow pressure. The renal capillary filtration coefficient was shown to equal 0.21 +/- 0.11, whereas the effect of changes in renal vein's pressure on implementation of the microvessels' exchange function in determined by the shifts of capillary hydrostatic pressure.
Institute of Experimental Medicine, Russian Acad. Med. Sci., 197376, St. Petersburg, Acad. I. P. Pavlov St., 12.
S V
SV
Barabanov
Iu A
IuA
Kudriashov
D000818:Animals; D002199:Capillary Permeability; D002415:Cats; D005260:Female; D007668:Kidney / Q000098:blood supply*; D008297:Male; D008833:Microcirculation; D009638:Norepinephrine / Q000494:pharmacology; D012077:Renal Artery / Q000502:physiology; D012082:Renal Veins; D018924:Vascular Capacitance; D014655:Vascular Resistance; D014662:Vasoconstrictor Agents / Q000494:pharmacology; D014690:Venous Pressure
D014662:Vasoconstrictor Agents; D009638:Norepinephrine