rectoanal junction

rectoanal junction

the division between rectum and anus marked by the transition of the mucous membrane from one bearing a columnar epithelium to one bearing a stratified squamous epithelium.
References in periodicals archive ?
coli strain known as Enterohemorrhagic 0157:H7, or EHEC, to form colonies within cattle, causing the bacteria to die off before they could reach the animals' rectoanal junction, the primary site of colonization.
The apex is found at the junction of the lower third and the middle third of the vagina, and at the rectoanal junction.