Definition of Peristomium. Meaning of Peristomium. Synonyms of Peristomium

- The peristomium is the first true body segment in an annelid worm's body in the anterior end. It is directly behind the prostomium and contains the mouth...
- the blood makes its entire circuit via blood vessels.   Prostomium   Peristomium O Mouth   Growth zone   Pygidium O **** In addition to Sipuncula and...
- filter feeders with no buccal organ. The prostomium is fused with the peristomium and bears a ring of feathery feeding tentacles. They live in parchment-like...
- lower ligules. It is also without a collar-like structure around the peristomium. Sand or rocks in intertidal and shallow marine waters. Pacific Ocean...
- over the dorsal side of the mouth. The prostomium together with the peristomium, which includes the mouth and pharynx, make up the annelid head. The...
- triangular anterior lobe—the prostomium—and a posterior ring-like portion—the peristomium. The latter bears four pairs of tentacular cirri, dorsally two pairs...
- have a primarily sensory purpose. A pair of eyes are also present. The peristomium is probably reduced to a cir****oral ring. The pygidium is usually bilobed...
- species it is more continuous. The mouth of polychaetes is located on the peristomium, the segment behind the prostomium, and varies in form depending on their...
- Parapodia are mostly biramous (only the first two pairs are uniramous). Peristomium fused with the first body segment, with usually two pairs of tentacular...
- completely ciliated. Between the prostomium and the peristomium is a ring of long cilia. The peristomium is also ciliated anteriorly and forms a ring, with...