Which of the following is between the proximal and distal tubules?

Question

BlackTom AI · Accepted Answer

To approach this question, I’ll map the tubule segments in order from the nephron’s filtration beginning to its exit:
Option 1: the glomerulus. This structure is part of the renal corpuscle where filtration occurs, and it sits upstream of the tubules, not between the proximal and distal tubules. So it’s not the correct location.
Option 2: the loop of Henle. This segment runs after the proximal convoluted tubule and before the distal convoluted tubule, precisely connecting the proximal and distal parts of the tubule system. Therefore, it stands between the proximal and distal tubules.
Option 3: the distal convoluted tubule. This is situated after the loop of Henle, so it lies downstream of the proximal tubule and after the loop, not between proximal and distal tubules.
Option 4: the proximal convoluted tubule. This is the first major tubular section after Bowman's capsule, so it is upstream of the loop of Henle and not between proximal and distal by definition.
Option 5: collecting duct. The collecting duct receives filtrate from the distal tubule and extends further into the medulla; it is well downstream of the loop of Henle and certainly not between the proximal and distal tubules.
In summary, only the loop of Henle serves as the segment that lies between the proximal and distal tubules, aligning with the standard anatomy of the nephron.

Which of the following is between the proximal and distal tubules?

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