human
Can you explain the function of the circulatory system in animals?
assistant
The circulatory system in animals functions to transport oxygen, nutrients, and hormones around the body, as well as helping to remove carbon dioxide, waste, and other byproducts. The main components of the circulatory system are the heart, which pumps the blood around the body, and the arteries, veins and capillaries, which carry the blood. The circulatory system helps to regulate body temperature and pH level, as well as providing immune protection to the body by carrying disease-fighting white blood cells to different areas of the body.