Biology Homeostasis PMDC Conceptual Practice
PMDC Verified Question 65 of 99
Which nephron population possesses long loops of Henle extending deep into the inner medulla to generate the renal medullary osmotic gradient?
A
Juxtamedullary nephrons
B
Cortical nephrons
C
Superficial nephrons
D
Peritubular nephrons
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Juxtamedullary nephrons
Concept: Juxtamedullary nephron functional anatomy.

Solution: Juxtamedullary nephrons have long loops of Henle that extend into the inner medullary zone, generating the steep osmotic gradient required for water reabsorption.

Why other options are incorrect:
  • Option B & Option C: Cortical/superficial nephrons have short loops confined mainly to the cortex and outer medulla.

  • Option D: "Peritubular" refers to capillary networks surrounding tubules, not a nephron type.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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