: 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.
Blood which is highly oxygenated is bright red in colour. Blood with less oxgen in it is a dark red in colour which could be perceived as almost black. Arteries carry highly oxgenated blood to the body and veins carry deoxygenated blood back to the lungs. The colour of your blood may be purely related to the location of the vein from which the sample was taken.