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In order to maintain the proper functioning of our organs, it is crucial for our blood to be pumped and circulated throughout our bodies. The heart plays a key role in this process, acting as a powerful pump that pushes blood through blood vessels. Its main function is to receive oxygen-depleted blood from the body, send it to the lungs for oxygenation, and then pump the fresh, oxygen-filled blood back out to all organs and tissues. This continuous circulation of blood is essential for sustaining life.

Veins play a vital role in the circulatory system by returning deoxygenated blood back to the heart. Unlike arteries, which carry oxygenated blood away from the heart, veins have one-way valves that prevent blood from flowing backward. Muscles surrounding the veins help push the blood towards the heart, especially in our lower limbs where gravity can disrupt the flow. By ensuring that blood reaches the heart, the circulatory system ensures that all organs receive enough oxygen and nutrients to function properly. Pretty cool, right?

When a person's heart stops, it is crucial to act quickly to revive them. This is where CPR comes into play! CPR is a vital technique that involves compressing the chest and providing artificial breaths to restore blood flow. Essentially, you push on their chest and breathe air into their mouth. This helps keep the organs functioning until medical professionals arrive. By performing CPR, ordinary individuals like us can significantly increase the chances of someone surviving a cardiac arrest. It buys time until advanced medical equipment, such as defibrillators, can be used to correct the heart rhythm.

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