<prompt> During TURP, surgeon takes care to dissect above the verumontonum to prevent injury toExternal Urethral SphincterUrethral crestProstatic UtricleTrigone of bladder  <response>: Damage to the external sphincter is avoided provided one uses the verumontanum as a guide to the most distal point of the resection. Reference : page1351 Bailey and Loves sho practice of surgery 25th edition 