The ADH is synthesized in:

Correct Answer: C

Rationale: ADH is synthesized in supraoptic/paraventricular hypothalamic nuclei transported to posterior pituitary (e.g., magnocellular neurons). Posterior pituitary stores/releases not synthesizes. Anterior pituitary is ACTH/GH unrelated. Neurohypophysis is synonymous less specific. Hypothalamic origin distinguishes it, critical for ADH production, unlike pituitary errors.

Correct Answer: C

Rationale: Laryngeal obstruction won't cause respiratory alkalosis blocks ventilation, raising PCOâ‚‚ (acidosis). Fever, anxiety, and salicylate toxicity hyperventilate lower PCOâ‚‚, raise pH. Obstruction's acidotic effect distinguishes it, critical for respiratory differential, unlike alkalosis triggers.

Correct Answer: B

Rationale: Nephrons filter blood and form urine not transport (ureters), absorb nutrients (gut), or store waste (bladder). This defines their role, key for renal function, contrasting with downstream or unrelated tasks.

Correct Answer: C

Rationale: The bladder stores urine not kidney (production), ureter (transport), or urethra (exit). This identifies storage organ, key for micturition, contrasting with production/transport roles.

Correct Answer: A

Rationale: Renal failure is impaired filtration not hypertension (cause), diabetes (risk), or stones (obstruction). This defines kidney dysfunction, key for prognosis, contrasting with related conditions.