What is the flow direction of the heart meridian?

The heart meridian, part of traditional Chinese medicine, exhibits a specific flow direction that is significant for practitioners in the field. It flows downward. This downward movement aligns with the physiological function of the heart, which includes the regulation of blood circulation throughout the body. In terms of energy or Qi, the heart is considered to govern the blood and vessels, and its downward flow is crucial for maintaining the proper distribution of energy and nourishment to the organs and tissues below.

Understanding the direction of the heart meridian's flow is essential for acupuncture practices, as it informs how points along the meridian are selected and manipulated to address various health issues. Each meridian is attributed a certain flow direction, which carries implications for diagnosis and treatment methods used in acupuncture.

In this context, the other directions provided do not accurately reflect the established flow of the heart meridian. Upward movement would contradict the natural flow pattern, while directional terms such as left or right are not applicable to meridian flow in the same way, as meridians are typically described in terms of vertical or horizontal orientation related to meridian pathways rather than a lateral left or right.