The excretory system plays an important role in regulating water levels within the body.Which one of the following is true of the excretory system?AUrine always contains a large amount of water.BThe kidneys always produce urine that is extremely high in urea and low in water.CWater levels are regulated by the bladder as it releases urine when it becomes full.DThe kidneys influence how much water is present in urine, regulating the water levels.
Question
The excretory system plays an important role in regulating water levels within the body.Which one of the following is true of the excretory system?AUrine always contains a large amount of water.BThe kidneys always produce urine that is extremely high in urea and low in water.CWater levels are regulated by the bladder as it releases urine when it becomes full.DThe kidneys influence how much water is present in urine, regulating the water levels.
Solution
The correct answer is D. The kidneys influence how much water is present in urine, regulating the water levels. The kidneys play a crucial role in maintaining the body's water balance by adjusting the volume and concentration of urine. They do this by filtering the blood and reabsorbing water and useful substances back into the blood, while waste products and excess substances are left to form urine. The concentration of urine can vary, depending on the body's hydration status.
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