ANATOMY
GENITO URINARY AND ADRENAL
| Question 
 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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 Before the kidney filter it out, where does urea exist? 
|  |  In your intestines 
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|  |  In your liver 
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|  |  In your stomach 
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|  |  In your bloodstream 
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 Explanation: 
Detailed explanation-1: -More than 99% of urea synthesis occurs in the liver.
Detailed explanation-2: -Urea is carried in the blood to the kidneys. This is where it is removed, along with water and other wastes in the form of urine.
Detailed explanation-3: -Urea is produced in the liver and is a metabolite (breakdown product) of amino acids. Ammonium ions are formed in the breakdown of amino acids. Some are used in the biosynthesis of nitrogen compounds.
Detailed explanation-4: -The kidneys remove urea from the blood through tiny filtering units called nephrons. Each nephron consists of a ball formed of small blood capillaries, called a glomerulus, and a small tube called a renal tubule.
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