Nemertea - Wikipedia
A little above the gut is the rhynchocoel, a cavity which mostly runs above the midline and ends a little short of the rear of the body. All species have a proboscis which lies in the rhynchocoel when inactive but everts to emerge just above the mouth to capture the animal's prey with venom.
Phylum Nemertea (Rhynchocoela) | Acoelomate Animals | The …
Phylum Nemertea (Rhynchocoela) Nemerteans (nem-er´te-ans) (Gr. Nemertes, one of the Nereids, unerring one) are often called ribbon worms. Their name refers to the unerring aim of the proboscis, a long muscular tube (Figures 14-23 and 14-24).
Ribbon worm | Anatomy, Habitat & Adaptations | Britannica
Ribbon worm, any member of the invertebrate phylum Nemertea (sometimes called Nemertinea, or Rhynchocoela), which includes mainly free-living forms but also a few parasites of crustaceans, mollusks, and sea squirts.
Ribbon Worm - Size, Types, Characteristics, Habitat, and Picture
2024年10月3日 · A coelomic cavity called the rhynchocoel typically runs above the midline and the gut. It is lined by epithelium and ends a little before the rear end of the body. The rhynchocoel contains an eversible infolding of the body wall called the proboscis.
Phylum Nemertina (Nemertea Or Rhynchocoela) - Biology Ease
The nemertines are characterized by a long, anterior, eversible proboscis (used to explore the environment and to ‘lasso’ prey); when not in use, the proboscis is retained within a cavity known as a rhynchocoel. Most nemertines are carnivores.
Nemertea - Simple English Wikipedia, the free encyclopedia
Rhynchocoela is a name used primarily in North America but gradually abandoned since the 1980s. [3] Nemertean worms are long, thin, animals without segments. They have no true head, although the anterior end is often slightly wider than the body. They are distinguished by the presence of an eversible proboscis.
ADW: Nemertea: INFORMATION
2018年3月20日 · Nemeteans have eversible proboscis situated in rhynchocoel. Nemerteans range in length from a few millimeters to 30 meters (stretched) in length (most commonly 20 cm or less) and may be drab or very brightly colored.
Nemertea: Phylum Of The Ribbon Worm | Earth Life
2020年3月9日 · The Nemertea (Ribbon Worms) show the most advanced development of all the acoelomate phyla. In some books, they are also referred to as the Rhynchocoela, Nemertinea, Nemertina, Nemertini or ‘Proboscis Worms’.
Ribbon Worms (Phylum Nemertea) - iNaturalist
Nemertea is a phylum of invertebrate animals also known as "ribbon worms" or "proboscis worms". Alternative names for the phylum have included Nemertini, Nemertinea and Rhynchocoela. Although most are less than 20 centimetres (7.9 in) long, one specimen has been estimated at 54 metres (177 ft).
Nemertea - Encyclopedia of Arkansas
2022年6月23日 · Ribbon worms are unique in having an eversible muscular proboscis that is used for grasping prey. It lies free inside of a cavity above the alimentary canal known as the rhynchocoel. This muscular tube can be swiftly thrust out to catch prey items. This phylum is also occasionally called the Rhynchocoela, which refers to the rhynchocoel.