How does the urinary system enable you to survive?!


Question: I need a little help here as well, links would help, i'm stuck!!


Answers: I need a little help here as well, links would help, i'm stuck!!

firstly, ignore the comment about the digestive tracts main function of removing waste food. as im sure you know, the digestive tracts job is to get nutrients from the food, not to remove waste from it. the waste that is produced i.e. faeces, is a result of the nutrients being taken from the food.

the urinary system. this comprises the kidneys and the bladder as well as related structures. the kidneys have twelve functions, all of which I am not going to list. one of them is to remove waste and toxins from the body, but it is also very heavily involved in regulating your acid-base balance, your electrolyte balance and the amount of heamoglobin you have in your blood. it releases a hormone called erythropoetein which promotes the production of red blood cells. it is also involved regulating calcium absorption and excretion. it is also very important in maintaining water content in the body.
for me to go into how all these mechaninsms are achieved would just be too long on a page, and especially confusing without the aid of diagrams. if you want to learn more about renal physiology, which is normal functioning of the kidneys, then I would suggest reading a physiology text book.

the bladder is meerly a storage container for urine. once fluid leaves the kidneys, it is just stored and doest not change at all. it is stored until an appropriate time when it can be expelled.

how it enables you to survive. removal of toxins. simple. too many toxins = death.

one of the other ways in which it helps you live, is removal of potassium. potassium is an electrolyte that is needed but too little or too much can be devestating and the window between what is too much and too little is very small so only small changes in potassium levels can make you ill. the serum potassium level is the major cause for concern in drs who are treating someone with acute renal failure. too much potassium can cause life threatening irregular heart beats called arrythmias one of which is ventricular fibrillation, which is just fancy talk for complete choas in the heart and if not treated promptly will cause death

The urinary system removes the liquid waste from the body. Without this function the waste would linger and the body would become poisoned. Sorry no links. I don't know to do that yet.

It flushes the cellular waste out of the body in the form of uric acid. Your circulatory system (blood) carries oxygen and water to all the cells in your body and carries waste from cells away.

Your digestive tract only gets rid of food waste.





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