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Anatomy
A 68-year-old man complains of pain upon urination. A CT scan and a biopsy provide evidence of an enlarged, cancerous prostate gland. Subsequently, he undergoes a radical prostatectomy. Postoperatively, he suffers from urinary incontinence because of paralysis of the external urethral sphincter. Which of the following nerves was injured during the operation?
Pelvic splanchnic
Sacral splanchnic
Pudendal
Superior gluteal
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