How does the bladder work?
Every time you eat or drink, your body absorbs liquids. It’s the job of your kidneys to filter waste products from these fluids and make urine. A continuous trickle passes from the kidneys to the bladder, which slowly expands. When the bladder is full a signal goes to the brain indicating the need to use the toilet. Once the toilet is reached the brain then tells the large bladder muscle to squeeze and contract. At the same time it tells the support muscles (or pelvic floor muscles) that surround the urethra (the outlet from the bladder) to relax and let the urine pass.
