- the upper Hohlvene = Vena cava superior(Blood of everything up of the Zwerchfell), with which animals as front Hohlvene Vena cava cranialis calls
- lower Hohlvene = Vena cava inferior (blood of everything below of the Zwerchfell), with the animals rear Hohlvene Vena cava caudalis designates
the Hohlvenenhave with humans a changing cross section depending upon body situation and intravasalem liquid volume of approximately 2 cm broad. The venous blood pressure within the Hohlvenen is with about 0 15 mm Hg. See yourself to ZVD
the Hohlvenen leaving with catheterssound out well. They can be represented and judged furthermore with different picture-giving procedures such as ultrasonic , phlebography or computer tomography well.
The Hohlvenen can be locked thrombotisch or tumor OS. They can be compressed also from the outside.