Biology Homeostasis PMDC Conceptual Practice
PMDC Verified Question 59 of 99
Diabetes insipidus is a clinical disorder characterized by polyuria (excessive excretion of dilute urine) caused by a deficiency of:
A
Antidiuretic hormone (ADH)
B
Aldosterone
C
Insulin
D
Thyroxine
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Antidiuretic hormone (ADH)
Concept: Etiology of diabetes insipidus.

Solution: Neurogenic diabetes insipidus results from an ADH deficiency (or renal insensitivity in nephrogenic DI), preventing water reabsorption in collecting ducts and resulting in copious, dilute urine excretion.

Why other options are incorrect:
  • Option B (Aldosterone): Deficiency causes hypoaldosteronism, leading to sodium loss and hyperkalemia.

  • Option C (Insulin): Deficiency causes diabetes mellitus, characterized by glucosuria and osmotic diuresis.

  • Option D (Thyroxine): Deficiency causes hypothyroidism.

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.

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.