By the process of diffusion.
An arteriole transports oxygenated blood from the arteries to the capillary beds and a venule transports de-oxygenated blood from the capillary beds to the veins.
Artery -> Arteriole -> Capillary -> Venule -> Vein
venule(veins)
Blood leaves a capillary through a venule, a small vein. At that point, the blood is making its journey back towards the heart.
Microcirculation
Either a arteriole on the artery side or a venule on the vein side of the bed.
atrium, ventricle, artery, arteriole, capillary, venule, vein
It's called blood vessel. it can be of following type viz Artery, Vein, Arteriole, Venule, Capillary.
Capillaries send blood to both arteries and veins.
artery- vein- capillary
artery- vein- capillary
capillary blood has a really bad smell to it and arerial blood its bright red and is a heavy flow > hope i helped lol (: