Pseudocele

The intestine continues digestion and absorbs and stores food, allowing some to diffuse into the pseuodcele and about the body.

The body cavity is a pseudocele (i.e., it is not lined with mesothelium). All of the viscera, including the digestive system, the excretory system (primitively), and the reproductive system, are suspended in the pseudocele.

The uterus occupies the pseudocele, rolling upon itself at intervals and extending in the posterior quarter of the body, where it narrows towards fine thin oviducts.