: 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.
Arteries and veins are both vessels in the circulatory system that carry blood through the body. The difference between the two is that arteries carry blood away from the heart and veins carry blood back to the heart. Arteries, which are larger than veins, carry blood away from the heart to provide oxygen and nutrients to the body. Since arterial blood is enriched with oxygen, it is bright red. After blood is depleted of oxygen and nutrients, it is carried back to the heart through veins.