What does the UB (Urinary Bladder) primarily store?

The Urinary Bladder (UB) primarily functions as a storage organ specifically for urine. In Traditional Chinese Medicine (TCM), the bladder's main role is to collect and store the urine produced by the kidneys after the filtering process. This process is crucial in maintaining fluid balance in the body, allowing for the excretion of waste while retaining essential nutrients.

In TCM, the kidneys are considered to be the source of water metabolism, which includes the production of urine. The bladder then serves as the reservoir that holds this fluid until it is ready to be expelled from the body. Understanding this function offers insight into how practitioners approach issues related to the urinary system, such as incontinence or urinary retention, where the normal storage and expulsion process may be disrupted.