Which PM encompasses the heart and governs blood circulation?

The heart, regarded in Traditional Chinese Medicine (TCM) as the central organ for governing blood circulation, is directly represented by the heart primary meridian (HT PM). This meridian plays a crucial role in ensuring the smooth flow of blood throughout the body, which is vital for nourishing tissues and organs. The heart is also associated with emotional well-being and mental clarity, further illustrating its importance beyond mere physical circulation.

In TCM, the other meridians, such as the spleen, liver, and pericardium, have distinct roles that contribute to overall health but do not specifically govern blood circulation like the heart meridian does. The spleen primary meridian is essential for blood production from food and nutrients, while the liver primary meridian is involved in regulating the flow of qi and blood, supporting emotional balance and detoxification. The pericardium primary meridian serves as a protective barrier for the heart and plays a role in emotional stability, but it is the heart meridian that is primarily focused on circulation. Therefore, identifying the heart primary meridian as governing blood circulation aligns seamlessly with TCM principles and the functions attributed to each meridian.