Differences in innervated neurons of the internal anal sphincter based on age and sex: A histological study

Aim Previous studies have shown sex and age differences in anal sphincter function, but few morphological studies have focused on the quality and quantity of the nerves that control the sphincter muscles. The present study aimed to determine whether there are morphological and quantitative sex and age differences in the nerves in the conjoined longitudinal muscle. Methods This was a single‐center, retrospective study using surgical specimens...