: an exaggerated reaction to the male-oriented ''shoot-'em-up games''. noun. A movie or TV program with much gunplay and violence: gambled for cigarettes, slurped Tang or watched shoot-'emups on TV (1953+)
Circulatory system. The human circulatory system (simplified). Red indicates oxygenated blood carried in arteries, blue indicates deoxygenated blood carried in veins. Capillaries, which join the arteries and veins, and the lymphatic vessels are not shown.
The blue color of our veins is also explained the same way, as the deoxygenated blood in the veins is claimed to be blue. See for example : When blood gives up oxygen to the different parts of the body, it becomes blue. The veins take blood back to the heart and lungs.