We urinate after we eat or drink because we absorb the vitamins and nutrients we can use and expel the rest. It also helps with regulating body temperature.
Urine is the body's way of eliminating fluid waste products. Urine contains waste or excess materials and toxic substances. Urine's main content is water. In fact 95 per cent …of the urine excreted is water. The other major and common constituents are sodium - 0.4 per cent, ammonia - 0.05 per cent, phosphates - 0.6 per cent, urea - 2 per cent, sulfate - 0.2 per cent and creatine, urobilinogen, casts, in minute quantities. Normally, only water soluble substances are excreted in the urine. Urine is produced by the kidneys as a process of cleaning the blood and excreting the unwanted soluble waste products from the body. The kidneys filter out the waste products such as toxins, excess water and mineral salts from the bloodstream. They filter, clean and purify about 150-180 liters of blood and recycles it daily. The urine formed in the kidney is drained by ureter into the bladder for storage. The urethra brings out the urine from the bladder, when time and place permit thus you get the "urge" to pee. (MORE)
Urination is the release of urine, or liquid waste, from the kidneys. If you are male, your urine comes out of the penis; if you are female, you have a separate urinary openin…g - both of these are called the urethra. (MORE)
The body has specific mechanisms for when the bladder will release urine, and how it releases urine. First, the brain is always in a "go ahead and go" setting for urination. …When the brain turns off that mechanism (like switching to a "don't go" or neutral setting), that is when we can urinate. Second, the kidneys have been continuously filtering "fluids" from the cells, blood coming from the heart, and intestines. This is not just what we drink, but from physical processes in the body. Third, the kidneys release urine into a holding area called the urinary bladder. It has a sphincter at the lowest part, right where it connects to the ureter (a tube that goes to the outside). At the other end, the ureter has a second sphincter. A sphincter is a muscle ring-like structure that keeps the tube closed. When the brain registers urinary bladder pressure, and turns the "always go" signal off, then the brain sends a message to the sphincters to open. But part of the sphincter opening is under voluntary control. Each person is normally at the urinal / on the toilet when the sphincters relax so that we urinate. Sometimes this whole process goes haywire. For example, older men may have an enlarged prostate gland so they cannot urinate completely. Older women may be incontinent. (MORE)
Wastes the body doesn't need and dispels it out of your body in theform of a liquid it is also a watery fluid produced by the kidneysthat contains urea and other wastes
Because When You Drink Liquids Such As Water, Juice Etc... You Tend To Use The Toilet, And That's Because When It Passes Through Your System E.G Stomach, Bladder, Kidneys, Int…estines. It Desolves And Makes A Smelly, Yellow Liquid Called 'Urine' . (MORE)