What is the main function of the heart?

The primary function of the heart is to pump blood throughout the body. This vital activity enables the distribution of oxygen and nutrients to tissues and organs while also facilitating the removal of carbon dioxide and metabolic wastes. The heart operates as a muscular pump, consisting of four chambers that work in a synchronized manner to ensure efficient circulation. This continuous flow of blood is essential for maintaining homeostasis and supporting the body's various functions.

While the heart plays important roles in connection with other bodily functions, such as supporting respiratory and endocrine systems, its core purpose is to actively circulate blood. This foundational role underscores the significance of the heart in overall health and physiological balance.