1 – Internal gills where the blood is reoxygenated 2 – Point where the blood is depleted of oxygen and returns to the heart via veins 3 – Two chambered heart. Source: Internet
A beetle's flight wings are crossed with veins and are folded after landing, often along these veins, and stored below the elytra. Source: Internet
After taking up cellular waste and carbon dioxide in capillaries, blood is channeled through vessels that converge with one another to form venules, which continue to converge and form the larger veins. Source: Internet
A network of nerves and veins intersects at a Dralasite's two eye spots. Source: Internet
After the oxygen is removed blood reaches venules and later veins which will take it back to the heart and lungs. Source: Internet
An AVM interferes with this process by forming a direct connection of the arteries and veins. Source: Internet