Which direction does the pericardium meridian travel?

The pericardium meridian travels primarily down the body, starting from the chest area where it originates at the pericardium, which is the protective sac around the heart. This meridian descends along the arm and continues to the palm, specifically through the center of the hand.

Understanding the directional flow of the pericardium meridian is crucial for practitioners, as it informs the placement of acupuncture points and the treatment strategies employed for conditions related to the heart and emotional well-being.

The other options do not reflect the established path of the pericardium meridian. The upward direction would imply a flow opposite to its anatomical course, while left and right do not accurately specify the meridian's travel from its origin to its endpoint.