During TURP surgeon takes care to dissect above the verumontanum to prevent injury to
TURP Damage to the external sphincter is avoided provided one uses the verumontanum as a guide to the most distal point of the resection/vaporisation/enucleation. Ref: Bailey and love 27th edition Pg no : 1465
External urethral sphincter
Urethral crest
Prostatic utricle
Trigone of bladder
Urology