The circulatory system helps to fight disease and keep an average body temperature

The circulatory system helps to fight disease and keep an average body temperature. It also helps by providing the correct chemical balance to maintain homeostasis. The circulatory system’s main job is to carry blood to all the parts of the body and transport other materials that help the body to function.
Oxygen and Carbon Dioxide Transport
Pulmonary circulation is when the blood goes from the heart to the lungs via the pulmonary artery where it is oxygenated in the capillaries of the lungs. The blood is then transported to the left atrium by the pulmonary veins. When one breathes, the carbon dioxide in the blood gets swapped with oxygen in the lungs.
Transport of Nutrients and Waste
Once the food is digested in the stomach and intestines, it gets absorbed into the bloodstream and then gets absorbed by the body’s cells through the capillaries. The circulatory system also transports other wastes and toxins to the liver, kidneys, and lungs to be removed from the body.
Protection from Disease
The circulatory system contains the white blood cells in the blood that help to fight against disease. When they sense invading pathogens or infection, they send out a chemical signal that alerts other white blood cells to help defend against the infection.
Regulation of Body Temperature
When a person is hot, blood vessels can dilate which cools the skin because more blood can flow near the skin’s surface to radiate heat. To conserve heat, the blood vessels constrict to prevent heat loss. This process helps to control body temperature.