The Six Fu Organs

🔊Alongside the five zang organs, Chinese medicine describes six fu organs: the gallbladder, small intestine, stomach, large intestine, bladder, and a sixth called the "triple burner," which has no single equivalent in Western anatomy. The zang organs are traditionally described as solid and as storing vital substances — qi, blood, and fluids. The fu organs are traditionally described as hollow, and their job is to receive, transform, and pass things along, rather than to store them long-term.

🔊The stomach receives food and begins breaking it down, passing it to the small intestine, which further separates what the body will absorb from what it will discard. The large intestine receives that waste and governs its final transformation and elimination. The gallbladder stores and releases bile to aid digestion, and the bladder stores and releases urine. The triple burner is the odd one out: rather than a single organ, it describes three functional zones — upper, middle, and lower — that together manage the movement of fluids and qi through the entire torso.

🔊The pattern across all six is "movement and passage" rather than "storage." A useful way to remember the difference: the zang organs are like a warehouse, holding onto valuable resources; the fu organs are like a series of loading docks, built for things to keep moving through them. Neither type of organ is more important than the other — a warehouse with no loading docks has nothing coming in or going out, and loading docks with no warehouse have nothing worth moving.