This is data collected..
Solute: Bowman's Capsule, Glomerus, Loop of Henle, Collecting Duct
protein: 0, 0.8, 0, 0
urea: 0.05, 0.05, 1.50, 2.00
glucose: 0.10, no data, 0, 0
chloride: 0.37, no data, no data, 0.6
ammonia: 0.0001, 0.0001, 0.0001, 0.04
substance x: 0, 9.15, 0, 0
Which one of these substances were not filtered into the nephron?
Why did the chloride increase in the collecting duct?
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To determine which substance was not filtered into the nephron, we need to identify the substance that has a concentration of 0 in the Bowman's capsule.
Looking at the data provided, we can see that the solute and glucose have concentrations of 0 in the Bowman's capsule. Hence, both solute and glucose were not filtered into the nephron.
Regarding why the chloride concentration increased in the collecting duct, we can observe that the initial chloride concentration is 0.37 in the proximal tubule (Bowman's capsule), and it increases to 0.6 in the collecting duct.
This increase in chloride concentration can be attributed to selective reabsorption. After the initial filtration in the Bowman's capsule, various substances, including chloride, undergo reabsorption in different segments of the nephron. In this case, the increase in chloride concentration likely occurred due to chloride ions being reabsorbed from the tubular fluid back into the bloodstream as it passes through the nephron's tubules.
Reabsorption is an essential process in the kidneys that allows the body to retain necessary substances such as ions, water, and nutrients while eliminating waste products. Hence, the increase in chloride concentration in the collecting duct is a result of selective reabsorption.