How does urine form

How Kidneys Form Urine

http://www.bway.net/%7Erjnoonan/humans_in_space/fluid.html

The kidneys’ two million or more nephrons form urine by three processes: filtration, reabsorption, and secretion. Urine formation begins with the process of filtration, which goes on continually in the renal corpuscles (glomeruli plus Bowma…

Why does the body form concentrated urine?

http://answers.yahoo.com/question/index?qid=20090525143054AAEj81k

We’re terrestrial animals living in a dry environment. It is therefore necessary to conserve our body fluids, hence the ability to make concentrated urine. The body requires a fairly consistent blood osmolality and volume, so fluid conserva…

Why does urine form a precipitate when stored for long?

http://answers.yahoo.com/question/index?qid=20090209064234AAzb7UG

that precipitate is the minerals and excess salts that the kidneys filter out of the blood.

Related Questions Answered on Y!Answers

Why does urine form a precipitate when stored for long?

Q: Recently i decided to store my urine in a bottle just to see what would happen. I sealed it in a plastic bottle and sealed the bottle in a ziplock. 2 weeks after doing this, i have noticed a white precipitate at the bottom of the bottle and on the sides of the bottle. Could anyone indicate what the precipitate is and how it formed?

A: that precipitate is the minerals and excess salts that the kidneys filter out of the blood.

How does one eliminate the odors form cat urine from a room?

Q: I had two cats but I don’t have them anymore. One pissed all over my bed in anger and then sometimes would pee on the carpet even though the liter box was cleaned. I cleaned the pee up… but the odor is still lingering and it is starting to become a “tad” unbearable. Any suggestions?

A: The cat urine odor is cause by ammonia so DO NOT use a chlorine bleach solution thinking that will help. The fumes cause by ammonia and chlorine being mixed are very bad for your lungs and if bad enough, can be even deadly.What you need to do is buy a black light bulb, a good size roll of plastic sheeting (or plastic trash bags) AND a professional odor remover that contains an organic digestant (the odor remover can be found at a professional cleaning supply store).Now, take the black light bulb and put it into a lamp. When it’s night, turn out all the lights and shine the black light on the carpet to identify the areas where the cat urine is. After you located (and hopefully marked) the areas the cats peed on, follow the label directions on the digestant cleaner then cover those areas with the plastic. Within 24 hours, the smell will be completely eliminated forever rather than just being masked by air fresheners or scented candles. Total cost for the supplies should be less than $20.00.

Why does the body form concentrated urine?

Q: I’m doing a science lab. I am not a sicko.

A: We’re terrestrial animals living in a dry environment. It is therefore necessary to conserve our body fluids, hence the ability to make concentrated urine.The body requires a fairly consistent blood osmolality and volume, so fluid conservation and limiting solute concentrations are vital.It requires a lot of water to get rid of toxic byproducts of protein catabolism, which your cells produce in the form of urea, which is fairly soluble. The glomeruli in your kidneys need to filter out a lot of fluid to get rid of the urea. That fluid then passes through the loops of henle which actively uptake water and specific solutes where necessary. That active uptake can be turned on and off by hormones.If the body is both high in sodium and dehydrated, then the urine can be very concentrated indeed.Fresh water animals don’t need to concentrate their urine as there is always a lot of water around for them to flush out nitrogenous waste.Birds use a different system to maintain their water homeostasis. They produce uric acid instead of urea. Uric acid is relatively insoluble, so they only need to use a tiny amount of water to flush it out. Uric acid is white in colour and is excreted into the bird’s cloaca.