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How is urine made?

Updated: 8/11/2023
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13y ago

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Urine is a liquid waste product of the body secreted by the kidneys by a process of filtration from blood called urination and excreted through the urethra.

Cellular metabolism generates numerous waste compounds, many rich in nitrogen, that require elimination from the bloodstream. This waste is eventually expelled from the body in a process known as micturition, the primary method for excreting water-soluble chemicals from the body. These chemicals can be detected and analyzed by urinalysis.

Urine contains a range of substances that vary with what is introduced into the body. Aside from water, urine contains an assortment of inorganic salts and organic compounds, including ureum: (NH2)2CO, proteins, hormones, and a wide range of metabolites.

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14y ago
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13y ago

First, blood is carried into the kidneys by the renal artery (anything in the body related to the kidneys is called "renal"). The average person has 1 to 1½ gallons of blood circulating through his or her body. The kidneys filter that blood as many as 400 times a day! More than 1 million tiny filters inside the kidneys remove the waste. These filters, called nephrons(say: neh-fronz), are so small you can see them only with a high-powered microscope. The waste that is collected combines with water (which is also filtered out of the kidneys) to make urine (pee). As each kidney makes urine, the urine slides down a long tube called the ureter (say: yu-ree-ter) and collects in the bladder, a storage sac that holds the urine. When the bladder is about halfway full, your body tells you to go to the bathroom. When you pee, the urine goes from the bladder down another tube called the urethra (say: yu-ree-thruh) and out of your body.

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10y ago

Urine is produced in the body by taking in fluids. From there, it goes through the stomach. Then it is separated in the kidneys. From there, it enters in the bladder, and is excreted as urine.

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13y ago

Urine is produced by the kidneys and is stored in the urinary bladder.

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10y ago

The Bladder system

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12y ago

In your kidneys

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13y ago

urine is made by the kidneys

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12y ago

nothing is it necessary

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Q: How is urine made?
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