Farbgrafik
1: Blutfluss, 2: Klappe. Querschnittsdiagramm einer Vene mit Klappen.
(CC BY-derivative work: Mouagip (talk) SA 3.0
Farbgrafik
1: Blutfluss, 2: Klappe. Querschnittsdiagramm einer Vene mit Klappen.
(CC BY-derivative work: Mouagip (talk) SA 3.0
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