<p>In a nephron, the site of reabsorption of nutrients back into the blood by active and passive transport happens:</p>
<p>A. the Bowman’s capsule
B. proximal convoluted tubule
C. distal convoluted tubule
D. loop of Henle
E. collecting duct</p>
<p>The Barron’s SAT prep book said the answer was D, the loop of Henle, but I was taught that most of the reabsorption of glucose, amino acids, etc. happened at B, the proximal convoluted tubule. Which source is right?</p>
<p>I feel as though the loop of henle is primarily for water and potassium reabsorption and that the proximal and distal tubule reabsorb most of the nutrients. Don’t think abut it too much though, the barrons always asks questions a little too specific</p>
<p>^Agreed. The SAT II Exam will never ask you to differentiate between such specific structures of the kidney regarding its general function. However, you should still know its basic structure and functions since the test will most likely compare a structure from the kidney to structures from other organs.</p>
<p>I agree with you, it’s either proximal or distal tubule. I think it’s distal.</p>
<p>The descending part of the loop of henle is for reabsorption of water and the ascending part involves the passive and active transport of salt ions (K+, Na+) out, against their concentration gradient.</p>