Thank all the medical and educational texts that chose blue to identify veins returning to the heart with a blue color and arteries away from the heart as red. A simple color choice to differentiate and somehow someone decided that this was the color of blood.
Thank all the medical and educational texts that chose blue to identify veins returning to the heart with a blue color and arteries away from the heart as red. A simple color choice to differentiate and somehow someone decided that this was the color of blood.
It doesn’t help that some blood vessels close enough to the surface of the skin can appear blue.
Fair point.