[Coupled functions of the vessels of the small intestine in various perfusion modes during histamine action].

The resistance, capacity and metabolic functions of the small intestine vessels were studied in i.a. infusion of 0.1 and 5.0 micrograms/min.kg histamine in cats. A dose-dependent dilatation of arterial vessels, a reduction of pre- and postcapillary resistance and various changes of venous outflow (either increase or decrease) were observed. The shifts of capillary hydrostatic pressure depended on the perfusion regimen. The capillary filtration coefficient increased in proportion with the dose of injected histamine and did not depend on conditions of the blood supply in the organ.