: 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.
In very small veins close to the surface of the skin, the blood can absorb oxygen directly through the skin surface and appear red in color (spider veins), for slightly larger and deeper surface veins, the color may be purple due to partial oxygenation and green to blue veins are still larger, deeper and have a low oxygen content (reticular veins).