162Ter Bv Henri Barbusse - APRES

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The human body is a complex and intricate machine. It has many different systems that work together to keep us alive and functioning properly. The nervous system sends signals throughout the body, allowing us to move, feel sensations, and think. The circulatory system pumps blood through our veins, delivering oxygen and nutrients to all of our cells. The digestive system breaks down the food we eat into nutrients that can be used by our bodies.