Which hand jue yin channels connect with the upper, middle, and lower jiaos?

The pericardium primary and pericardium divergent channels are indeed responsible for connecting with the upper, middle, and lower jiaos. In Traditional Chinese Medicine (TCM), the concept of the three jiaos refers to the functional divisions of the body: the upper jiao (heart and lungs), the middle jiao (spleen and stomach), and the lower jiao (kidneys and bladder).

The pericardium primary channel primarily runs from the chest to the hand, influencing the heart and related organs, which are prominent in the upper jiao. Additionally, the pericardium divergent channel diverges from the primary pathway to connect deeper into the body, allowing it to interact with a broader network of channels and organs, thereby facilitating communication among all three jiaos.

The function of these channels is significant for ensuring the harmonious flow of Qi and maintaining the balance of physiological activity throughout the body. This is crucial for the overall health represented in TCM practices, as it provides a pathway for the circulation of Qi from the heart, helping to connect the physical body and its various systems.