proctodaeum

A posterior section of the alimentary canal or digestive tract, being so much of the whole intestine or enteric tube as is formed at the aboral end by an in growth of the ectoderm: correlated with stomodæum. which is derived from the ectoderm at the oral end—both being distinguished from enteron proper, which is of endodermal origin. Also proctodeum.

The posterior division of the cloaca in such animals as birds, opening externally by the anus: correlated with coprodæum and urodæum.

See mesenteron.

Alternative spelling of proctodeum.