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By looking at the table of data given to us, we were asked to analyze the data and show the kidneys role in osmoregulation.

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Osmoregulation Data Analysis Alyssa Comberbach 11/09/04 Aim By looking at the table of data given to us, we were asked to analyze the data and show the kidneys role in osmoregulation. Data Analysis Using the data presented to us in table 1, it is possible to see how the kidneys play a role in osmoregulation, the control of the levels of water and mineral salts in the blood. Table 1, Quantities of water and solutes in blood plasma compared with quantities present in glomerular filtrate and urine during a 24 hour period. CHEMICAL QUANTITY IN 180 LITRES OF BLOOD PLASMA QUANTITY IN GLOMERULAR FILTRATE PER DAY QUANTITY REABSORBED PER DAY QUANTITY IN URINE PER DAY Water (liters) 180 180 178-179 1-2 Solutes (grams) Proteins 7000-9000 10-12 10-12 0 Sodium (Na+) 540 540 537 3 Chloride (Cl-) 630 630 625 5 Hydrogen carbonate 300 300 299.7 0.3 Glucose 180 180 180 0 Urea 53 53 28 25 Potassium 28 28 24 4 Uric acid 8.5 8.5 7.7 0.8 Creatinine 1.4 1.4 0 0 By looking at this table one can obtain a variety of information. ...read more.


From table 1 and 2 it is visible that very little of the ion substances, (sodium, chloride, hydrogen carbonate and potassium) are excreted, the majority of their value is reabsorbed into the blood and only a very small percent is excreted. By comparing Table 1 and 2 it is possible to see that a very large amount of glucose passed through the kidneys but never gets excreted (according to the data presented). By looking at the percentages on the solutes in the urine, we can see what the kidneys job is in the body in more detail as it is possible to see what exactly is removed from the blood stream. (Table 3 and chart 1) Table 3, Percentages of substances in Urine. URINE Proteins 0 sodium 7.8 Chloride 13.1 Hydrogen carbonate 0.79 Glucose 0 Urea 65.6 Potassium 10.50 Uric acid 2.10 Creatinine 0 The majority of urine is made up of Urea which is removed form the blood by the kidneys. However, by comparing this with Table 2, we see that only 15.7% of Urea is excreted, and 17.6% is reabsorbed into the blood. ...read more.


The fact that the kidneys do not allow glucose to be excreted is a good way of testing for problems. If someone's urine contains glucose, it is likely that they have something wrong with their proximal convoluted tubule. Water is a vital substance in our bodies. A huge percentage of our bodies is made of it, thus without it there is no ways we could survive. The kidneys are specially made so that very little of the water that passes through them is excreted. As seen in table 1, the only water that is lost, is used to dilute the urea that is being excreted. Thus, water loss will be in direct relation to the amount of urea removed from the blood. The kidney allows water molecules to pass through via osmosis back into the body. The kidney is a complex structure which is vital for our existence. Often people have to have transplants as they have kidney failures. It separates the harmful substances in our bodies from the substances we need most. This data shows what those substances are and how the kidney divides them into what needs to be excreted and how much need to be excreted. ...read more.

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