Cyclical flowing and distribution
The heart meridian orginates from the heart. It emerges and spreads over the heart system. It passes through the diaphragm to connect with the small intestine. The exteriorly running part runs from the heart system to the lung. Then it turns downward and emerges from the axilla. From there it goes along the posterior border of the medial aspect of the upper arm and down to the cubital fossa. Then it descends along the posterior border of the medial aspect of the forearm to the pisiform region proximal to the palm and enters the palm. There it follows the medial aspect of the little finger to its tip and links with the small intestine meridian.
The branch from the heart system runs alongside the esophagus to connect with the eye system. (see Fig. 15)
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