What is the human organ system that consists of the heart and blood vessels?

The human organ system that consists of the heart and blood vessels is known as the circulatory system. This system is primarily responsible for transporting blood, nutrients, oxygen, carbon dioxide, and hormones throughout the body. The heart functions as the pump that propels blood through an extensive network of arteries, veins, and capillaries, ensuring that all tissues receive the necessary substances for proper function.

In addition to its role in transportation, the circulatory system also plays a key part in regulating body temperature, maintaining pH levels, and protecting the body from pathogens through the immune components found in the blood. By facilitating these vital processes, the circulatory system supports overall health and homeostasis in the body. Other organ systems listed, such as the respiratory system, nervous system, and endocrine system, have distinct functions and do not encompass the role and components associated with the heart and blood vessels.