[The effect of the structures of the ventral medulla oblongata on the hemodynamics and transcapillary fluid exchange in the lungs].
Pulmonary arteries and veins reacted by constriction to electric activation of rostrally located medulla oblongata ventral structures (lateral paragiant-cell nucleus area) in acute cat experiments. In contrast to this, electric stimulation of medulla oblongata caudal ventral structures induced dilatation of lesser circulation vessels. Counter-phase changes in parameters characterizing pulmonary microhemodynamics (capillary hydrostatic pressure, capillary filtration index) in response to electric stimulation of the studied brain structures permit a conclusion on the high homeostatic parameters of pulmonary microcirculation when maintaining ventilation perfusion relationships.
Vishnevskiĭ
A A
AA
Tkachenko
B I
BI
D000136:Acid-Base Equilibrium / Q000502:physiology; D000818:Animals; D002196:Capillaries / Q000502:physiology; D002415:Cats; D004558:Electric Stimulation / Q000379:methods; D006439:Hemodynamics / Q000502:physiology; D006874:Hydrostatic Pressure; D008168:Lung / Q000098:blood supply / Q000502:physiology*; D008526:Medulla Oblongata / Q000502:physiology*; D011652:Pulmonary Circulation / Q000502:physiology*; D014882:Water-Electrolyte Balance / Q000502:physiology*
Vliianie struktur ventral'nykh otdelov prodolgovatogo mozga na gemodinamiku i transkapilliarnyĭ obmen zhidkosti v legkikh.