VASCULAR
THE NEPHRON
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The DCTs of many nephrons opens into a straight tube called collecting duct.
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In cortical nephrons (majority), the loop of Henle is too short and extended only very littlein medulla.
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In juxta medullary nephrons (minority), the loop of Henle is very long and runs deeply into medulla.
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Vasa recta is not a part of peritubular network .
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Detailed explanation-1: -Blood exiting the glomerular capillaries passes through a second arteriole, the efferent arteriole. Blood then flows through the peritubular capillaries, which include the vasa recta that extend into the renal medulla.
Detailed explanation-2: -Whereas the peritubular capillaries surround the cortical parts of the tubules, the vasa recta go into the medulla and are closer to the loop of Henle, and leave to ascend to the cortex. Terminations of the vasa recta form the straight venules, branches from the plexuses at the apices of the medullary pyramids.
Detailed explanation-3: -The main difference between vasa recta and peritubular capillaries is that the vasa recta are the blood capillaries that surround the loop of Henle in the juxtamedullary nephrons. But, peritubular capillaries are the blood capillaries that surround the PCT and DCT of the cortical nephrons.