來自薦部的副交感節前神經(preganglionic parasympathetic fiber),主要經由下列何者進入骨盆神經叢(pelvic nerve plexus)?
腹下神經(hypogastric nerve)
陰部神經(pudendal nerve)
骨盆內臟神經(pelvic splanchnic nerve)
閉孔神經(obturator nerve)