The term used to describe the three openings in the urinary bladder is the

Correct Answer: D

Rationale: The trigone is the bladder's three openings two ureters, one urethra (e.g., triangular region). Detrusor is muscle not openings. Rugae are folds not specific. Cortex is kidney not bladder. Trigone's anatomical term distinguishes it, key to bladder structure, unlike muscle or unrelated areas.

Correct Answer: D

Rationale: Most body water (~60%) is in cells intracellular fluid (e.g., ~40 L in 70 kg adult). Plasma is ~3 L small fraction. Lymph is minimal circulatory subset. Tissue fluid (interstitial) is ~15% less than cells. Cellular dominance distinguishes it, critical for hydration, unlike extracellular options.

Correct Answer: D

Rationale: Sodium is the best osmolarity indicator dominant extracellular ion (~140 mM, e.g., drives osmosis). Calcium is minor (~2.5 mM) less impact. Chlorine follows Na secondary. Potassium is intracellular not plasma. Na 's prevalence distinguishes it, critical for osmolarity, unlike lesser ions.

Correct Answer: C

Rationale: pH above 7.4 is alkalosis base excess (e.g., HCO₃⁻ rise). Acidosis is below 7.35 acidic. Diuresis is urine output not pH. Natriuresis is Na excretion unrelated. Alkalosis's high pH distinguishes it, critical for acid-base status, unlike low pH or unrelated terms.

Correct Answer: B

Rationale: Hemodialysis removes 8-25 g urea in 3-6 hours e.g., typical clearance (blood levels drop). 8-10 g is low underestimates. 50-250 g is excessive beyond capacity. 8-25 mg is trivial mg vs. g error. 8-25 g distinguishes it, critical for dialysis efficacy, unlike under/over or unit mistakes.