Which organ is NOT connected to the Small Intestine primary channel?

The Small Intestine primary channel is primarily associated with the Heart, Stomach, and Small Intestine itself. Its connections reflect the pathway's role in digestion and the relationship with both the Heart and Stomach in the process of transformation and transportation of nutrients.

The Bladder, while it plays an important role in the excretion of waste and fluid metabolism, is not directly connected to the Small Intestine primary channel in the context of TCM meridian theory. Instead, the Bladder is associated with different channels, particularly related to the Kidney channel.

Thus, the organ that is not connected to the Small Intestine primary channel is the Bladder, highlighting the specific relationships that exist between the Small Intestine and the Heart, Stomach, and its own meridian pathway. This indicates a broader understanding of how these channels interrelate within the context of Traditional Chinese Medicine.