[Physiology of venous circulation].
The venous system becomes deformed and distended under the effect of neighboring tissues and hydrostatic pressure. It is thus under a constant threat of stasis. While lying-down at rest, the venous blood is propulsed by means of the pressure gradient maintained by the vis a tergo and the vis a fronte, modulated by the parietal tonus. While standing and stationary, decompensation occurs despite the bulbar reflexes, despite lymphatic resorption and despite the counter-pressure of the perivenous tissues. However, muscular activity and especially walking at a steady pace, restores the resorption of the interstitial liquids, tanks particularly to the musculovascular synergy or the peripheral heart.
D001775:Blood Circulation; D005110:Extracellular Space; D006801:Humans; D006874:Hydrostatic Pressure; D009132:Muscles / Q000378:metabolism; D014680:Veins / Q000502:physiology*; D014690:Venous Pressure
Physiologie de la circulation veineuse.