A 72-Year-Old Man Presented to the Emergency Department Due to Constipation

A 72-year-old man presented to the emergency department due to constipation of acute onset. The patient did not have any bowel movements for the last 5 days. The patient is known to have multiple disc herniation. Vital signs are within normal limits. On examination, the patient has absent knee and ankle reflexes. In addition, the patient lost motor function in the lower extremities. Sensation around the perineal region is absent. Bilateral lower extremity weakness is present, and sensation is impaired in the perineal region. Abnormality in the function of which of the following nerves explains constipation?

A) Greater splanchnic nerve
B) Ilioinguinal nerve
C) Lesser splanchnic nerve
D) Pelvic splanchnic nerves
E) Vagus nerve

Correct Answer:

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