File:Valvula.jpg - Wikimedia Commons
Annotationen/Kommentare
Farbgrafik
Schema einer Vene.
1 Endothel, 2 Venenklappe, 3 Sinus valvulae.
red arrows indicate blood flow, black arrow indicate external forces (like muscle activity) that drive blood inside the vessel
own work
CC BY-Uwe Gille SA 3.0
http://creativecommons.org/licenses/by-sa/3.0/deed.en