A patient with a ureteric stone reports severe colicky flank pain that radiates toward the groin. Which explanation is most accurate?
Correct answer: B. The pain results from spasms and distension of the ureter
- A. The pain is caused by stretching of the renal capsule
- B. The pain results from spasms and distension of the ureter
- C. The pain is caused by irritation of the urinary sphincter
- D. The pain results from overfilling of the urinary bladder
Explanation
A stone can obstruct the ureter, causing smooth muscle spasm and distension above the obstruction. Bladder overfilling causes suprapubic discomfort rather than the typical colicky flank-to-groin pain.
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About Urinary System
The urinary system includes the kidneys, ureters, urinary bladder and urethra, with emphasis on nephron structure and urine formation. It explains glomerular filtration, tubular reabsorption, tubular secretion, water and electrolyte regulation, acid base balance, and the roles of ADH and aldosterone in maintaining homeostasis.
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