: 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.
Rating Newest Oldest. Best Answer: Blood is bright red when it contains oxygen, and it is a dark reddish-maroon when it doesn't contain oxygen. It is never blue, even when it is inside the body. The blue color is simply the veins themselves with dark blood within. They show up as blue because they are under the skin, and blue is the only (visible) wavelength with enough energy to penetrate that deep and reflect back out.