Which system includes the heart, arteries, veins, and capillaries?

The blood vascular system, also known as the circulatory system, is responsible for transporting blood throughout the body. It includes vital components such as the heart, which pumps blood, arteries that carry oxygenated blood away from the heart, veins that return deoxygenated blood back to the heart, and capillaries, which are tiny blood vessels that facilitate the exchange of oxygen, nutrients, and waste products between blood and tissues. This system is crucial for maintaining the body's overall function, delivering essential substances to cells, and removing waste. Understanding the structure and function of the blood vascular system is fundamental for anyone in the field of nail technology, as it plays a key role in overall health and can affect the appearance and condition of the nails.