briefly describe urine formation?

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I'm going to try to make this as brief as possible, though it is a very complicated process. As your blood circulates around your body, it passes through the kidneys. There, some of the plasma moves out of the blood, taking toxins, wastes, and metabolic byproducts with it. In the kidneys, through millions of different units called nephrons, wastes are separated out of the fluid for elimination. Some water will naturally follow those wastes through osmosis, which is where a portion of the water or urine comes from. The actual amount lost in this process depends on how much waste is removed from the blood. The more waste expelled, the more water that will follow.

The rest of the plasma fluid is reabsorbed based on a complicated hormonal and chemical process where the body determines how much water and remaining products it needs and how much can be eliminated. Keep in mind that water is critical to all aspects of the human body, but the most important at this point is blood pressure, electrolyte level, and general hydration level. If your body senses a depletion of fluid (water, blood, etc.) or necessary electrolytes or your blood pressure drops, hormones will cause the kidneys to retain fluid and make much less urine. If there is an excess of fluid or electrolytes or your blood pressure rises, the kidneys will pass more fluid through.

Once the urine is made in the kidneys, it travels through ureters to the urinary bladder where it is stored until you get rid of it. That's as basic as I can make such a complicated process.

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briefly describe urine formation?

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