Organic matter makes up between 65% and 85% of urine dry solids, with volatile solids comprising 75–85% of total solids. The total solids in urine are on average 59 g per person per day. Urine also contains proteins, hormones, and a wide range of metabolites, varying by what is introduced into the body. The remainder can be broadly characterized into inorganic salts, urea, organic compounds, and organic ammonium salts. Polyuria is a condition of excessive production of urine (> 2.5 L/day), oliguria when < 400 mL are produced, and anuria being < 100 mL per day.Ībout 91-96% of urine consists of water. Producing too much or too little urine needs medical attention. Characteristics QuantityĪverage urine production in adult humans is around 1.4 L of urine per person per day with a normal range of 0.6 to 2.6 L per person per day, produced in around 6 to 8 urinations per day depending on state of hydration, activity level, environmental factors, weight, and the individual's health.
#Is inside considered limbo 2 series#
Smaller species, including rodents and bats, cannot produce steady streams and instead urinate with a series of drops. Research looking at the duration of urination in a range of mammal species found that nine larger species urinated for 21 ± 13 seconds irrespective of body size.
Urine flows from the kidneys through the ureter, bladder, and finally the urethra before passing from the body. The resulting urine contains high concentrations of urea and other substances, including toxins. The kidneys extract the soluble wastes from the bloodstream, as well as excess water, sugars, and a variety of other compounds. The system produces urine by a process of filtration, reabsorption, and tubular secretion. The urinary system consists of the kidneys, ureters, urinary bladder, and urethra. In humans, soluble wastes are excreted primarily by the urinary system and, to a lesser extent in terms of urea, removed by perspiration. Most animals have excretory systems for elimination of soluble toxic wastes. Livestock urine and feces also require proper management if the livestock population density is high. Human urine and feces are collectively referred to as human waste or human excreta, and are managed via sanitation systems. Historically, aged or fermented urine (known as lant) was also used for gunpowder production, household cleaning, tanning of leather and dyeing of textiles. Some animals use it to mark their territories. Therefore, urine can be used as a fertilizer. In balanced ecosystems, urine fertilizes the soil and thus helps plants to grow. Urine plays an important role in the earth's nitrogen cycle. A urinalysis can detect nitrogenous wastes of the mammalian body. These by-products are expelled from the body during urination, which is the primary method for excreting water-soluble chemicals from the body.
Urination results in urine being excreted from the body through the urethra.Ĭellular metabolism generates many by-products that are rich in nitrogen and must be cleared from the bloodstream, such as urea, uric acid, and creatinine. Urine flows from the kidneys through the ureters to the urinary bladder. Urine is a liquid by-product of metabolism in humans and in many other animals.
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