Rosette organ

from Wikipedia, the free encyclopedia

The rosette organ is an adhesive structure that is developed in the types of Gyrocotylidea . These animals, which belong to the tapeworms, live as endoparasites in the intestines of sea ​​cats (Holocephalii) and, with the rosette organ, have a structure with which they can hold onto their spiral intestines ( spiral intestines ).

The rosette organ is located at the rear end of the animals, which can be between 2 and 20 centimeters long, and is designed as a lobed and rosette-like folded structure. With these appendages, the worms cling to the spiral intestine and prevent them from being carried out of the body with the intestinal contents. It has its own innervation through a large ganglion that is the only one next to the animal's brain .

supporting documents

  1. ↑ a b Willi Xylander: Neodermata. In: W. Westheide, R. Rieger (Hrsg.): Special Zoology Part 1: Protozoa and invertebrates. Gustav Fischer Verlag, Stuttgart / Jena 1996, ISBN 3-437-20515-3 , p. 249.

literature

  • Willi Xylander : Neodermata. In: W. Westheide, R. Rieger (Hrsg.): Special Zoology Part 1: Protozoa and invertebrates. Gustav Fischer Verlag, Stuttgart / Jena 1996, ISBN 3-437-20515-3 , p. 249.