Blood flow in veins
Practicals 16


Color Atlas Of Physiology 5th Ed (A Despopoulos Et Al, Thieme 2003)_Page_218
1.Pressure gradient between venous system and right atrium („a force acting from behind“ – vis a
tergo)
2. Suction effect of systole           („a force acting from in front“ – vis a fronte)
3. Skeletal muscle contractions – muscle pump
4. Suction effect of inspirium – increased intraabdominal pressure and decreased intrathoracic
pressure
5. Venous valves
1
2
4
3
5
Mechanisms of venous return