I just wonder?
Question:
Answers:
"Normal urine is colored pale yellow by yellow pigments such as urochrome, urobilin and uroerythrin. They are normal metabolic end products."
Other Answers:
Yellow urine results from the excess sugar,dirt,salts,and other harmful substances in your body.It is as we know, a form of excretion.
Source(s):
My Brain.
tht guys rite
but ewwwwwwwww..
the substances that colour the urine are all the products of metabolism which are excreted by the kidneys. In general urine turns yellow because of urobilinogen which in one of the breakdown producs of bilirubin.
Source(s):
i'm a med student
The urine is yellow because of it's excretion of biliar pigments. It gives the feces a brown color for the same reason. These substances are eliminated by kidneys and liver. When we have obstruction or other impairment of the biliary ducts, or liver diseases, our usine becomes brownish and the feces become almost white, and our skin and mucosas become yellow, a phenomenon called jaundice (deposition or bilirubin on the surface of our body).
That's a nice question showing your curiousity about the wonderful human body!
(the whole process is quite complex but i'll try to simplify as much as possible.)
The yellow colour of urine is actually from a pigment named urobilin.
Urobilin is formed from urobilinogen (is colourless, it converts into the pale yellow coloured urobilin on oxidation). Urobilinogen is derived from bilirubin which is the breakdown product of Red Blood Cells of the body.
Bilirubin is harmful for the body and once formed, it is the function of the liver to help remove it by making it soluble with water.
Once it becomes soluble in water, the kidneys can then excrete it out with ease in urine. (The kidneys cannot excrete out the insoluble bilirubin which has not been treated by the liver).
whenever the liver is not functioning adequately or there is some blockage to the flow of bile (produced by liver, which contains bilirubin), the bilirubin keeps circulating in the body fluids and gets deposited in the skin and mucous membranes; giving a yellowish discolouration called jaundice.
Hope this helps.
Source(s):
I am a lecturer in a medical college.
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