During TURP, surgeon takes care to dissect above the verumontonum to prevent injury to
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 Love's sho practice of surgery 25th edition
External Urethral Sphincter
Urethral crest
Prostatic Utricle
Trigone of bladder
Urology