Which organ is not penetrated by the ST divergent channel?

The stomach divergent channel is primarily linked to the stomach and its interaction with other organs through the network of channels in Traditional Chinese Medicine (TCM). The divergent channels branch off from the main channels and connect with various organs to facilitate distribution and balance of Qi.

In this context, the stomach divergent channel specifically connects with the stomach, spleen, heart, and lung channels, establishing connections that are essential to their function. However, the large intestine does not have a direct relationship with the stomach divergent channel in terms of being penetrated. Instead, it has its own set of pathways and relationships with other channels.

Therefore, emphasizing the anatomical and functional framework of the divergent channels reveals that the large intestine is not directly involved with the stomach divergent channel, making it the correct choice.