GENERAL HISTOLOGY

EXCRETORY SYSTEM

KIDNEY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The portion of the nephron that empties into the collecting duct is the
A
nephron loop (loop of Henle).
B
proximal convoluted tubule.
C
distal convoluted tubule.
D
papillary tubule.
Explanation: 

Detailed explanation-1: -The third part of the renal tubule is called the distal convoluted tubule (DCT) and this part is also restricted to the renal cortex. The DCT, which is the last part of the nephron, connects and empties its contents into collecting ducts that line the medullary pyramids.

Detailed explanation-2: -The distal convoluted tubule is the portion of the nephron that empties into the collecting duct.

Detailed explanation-3: -The collecting duct empties into the distal convoluted tubule. The Bowman’s capsule surrounds the glomerulus. The loop of Henle is between the proximal and distal convoluted tubules. The loop of Henle empties into the distal convoluted tubule.

Detailed explanation-4: -Collecting Duct. A distal convoluted tubule connects to the collecting duct system that fine-tunes salt and water reabsorption and plays a major role in acid–base balance. The initial segment of the collecting duct, the cortical collecting duct, takes off from the distal convoluted tubule in the cortex.

Detailed explanation-5: -The distal convoluted tubule is the nephron segment that lies immediately downstream of the macula densa. Although short in length, the distal convoluted tubule plays a critical role in sodium, potassium, and divalent cation homeostasis.

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