Physiology of the Heart

Abstract

It is essential for the maintenance of hemostasis that fundamental mate-rials, such as oxygen and nutrients, are continuously picked up from the external environment and delivered to cells, while waste is eliminated. Hemostasis requires the regulation of body temperature, which is accomplished by transporting generated heat to the skin and releasing it at the body’s surface, so that muscle heat activity is maintained. The blood also carries hormones, the chemical messengers of the body. The bloodstream transports it from the site of production to tissues or organs, and it is essential for regulating physiology and behavior. The cardiovascular system includes the heart, blood vessels, and blood.