(Originais Teachy 2024) - Question Hard of Sciences

Imagine you are a detective of the human body and your mission is to unravel how the circulatory system works. This system is like a large network of roads that carries food and oxygen to all cells of our body and then collects the bad things that need to be disposed of. It is formed by different parts, such as the heart, which is the engine that makes the blood circulate, the veins, which bring the blood back to the heart, and the arteries, which carry the blood from the heart to the rest of the body. Now, think about the following mystery: during a game of tag in the park, Pedro, who was running very fast, started to feel his heart beating harder and faster. Explain what is happening to Pedro's heart and how the circulatory system is helping him to stay healthy during this physical activity. Remember to mention the role of veins and arteries at this moment.