Angiotensin II receptors are found in:

Correct Answer: C

Rationale: Angiotensin II receptors are in the zona glomerulosa stimulate aldosterone release (e.g., adrenal cortex). Juxtaglomerular cells produce renin not receptors. Macula densa senses lacks these. Intercalated cells manage pH not angiotensin. Adrenal location distinguishes it, key to RAAS, unlike renal or tubular sites.

Correct Answer: B

Rationale: At 5000 m, hypoxia drives hyperventilation PCOâ‚‚ falls (COâ‚‚ blown off), pH rises (respiratory alkalosis). Both lower misstates pH rises. Both higher ignores altitude false. pH fall/PCOâ‚‚ rise is hypoventilation opposite. Alkalotic shift distinguishes it, key to high-altitude response, unlike uniform or reversed changes.

Correct Answer: A

Rationale: Kidneys are retroperitoneal (behind peritoneum) not thoracic (lungs), pelvic (bladder), or pericardial (heart). This positions them anatomically, vital for surgical/radiological context, contrasting with cavity misconceptions.

Correct Answer: B

Rationale: Ureters carry urine from kidneys to bladder not reverse, urethra (exit), or liver (digestive). This specifies transport path, critical for urine flow, contrasting with incorrect directions.

Correct Answer: B

Rationale: Kidney stones form from mineral/salt precipitation not infection, dehydration (risk factor), or BP alone. This specifies etiology, critical for prevention, contrasting with secondary factors.