Looks like no one added any tags here yet for you.
nephrotomy
incision into the kidney
neurectomy
surgical removal of part or all of a nerve
neurology
branch of medicine concerning the nervous system and its diseases
neurolysis
freeing a nerve from adhesions
neuroma
a benign tumor derived from a nerve
neuroplasty
surgical repair of a nerve
neurotomy
division or dissection of a nerve
obstetrics
the branch of medicine that concerns the management of pregnancy and childbirth
occlusion
the acquired or congenital closure of a passage
oophorectomy
surgical removal of an ovary