| urea nitrogen |
A chemical in the blood produced by the breakdown of protein. Urea nitrogen is removed from the blood by the kidneys. Blood urea nitrogen (BUN) tests are sometimes done to see how well the kidneys are working.
출처: www.stjude.org/glossary
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| urea nitrogen a. |
the amount of urea in grams produced by a person's body over a specific period of time, closely related to the amount of nitrogen that has not been absorbed by the body. It is calculated as the sum of the urea excreted in the urine plus that found in the blood by calculating blood urea nitrogen. A low figure indicates efficient use of dietary protein. The person's intake of protein must also be known, because a low urea nitrogen appearance is also seen with a low protein diet or malnutrition.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| urea nitrogen |
Urea is one of three end products of nitrogen metabolism. Blood levels of urea are typically low and relatively constant since the primary mode of urea excretion is through the kidneys. The action of antidiuretic hormone on the permeability of the medullary collecting duct allows urea to diffuse into the medullary interstitium. The presence of both urea and sodium in the interstitium increases the osmotic gradient for water reabsorption and increases the concentration of the urine. ...
출처: www.anjotech.co.za/glossary3.htm
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