: 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 difference between the blood colors is caused by the amount of oxygen in the blood. Blood in the veins has less oxygen, it is being cycled back to the heart and lungs. Blood in the arteries has more oxygen, it is coming from the lungs and heart to circulate in your body.