anal sex; anal intercourse
proctology department; proctology clinic; proctology
anoscope; proctoscope; rectal speculum
proctology; colorectal surgery
anal fissure; bleeding piles; hemorrhoids
anal bleeding; bleeding of the anus
ectoprocta; bryozoa; moss animals
entoproct (any animal of phylum Entoprocta)
postanal gut; post-anal gut; postcloacal gut
internal anal sphincter (muscle)
levator anus muscles; levator ani
anal valve; valvulae anales
imperforate anus; anal atresia; aproctia