Nervous system often imbedded in the epidermis.
Among the Archiannelida, in Aeolosoma and some Polychaetes, the whole central nervous system remains imbedded in the epidermis.
The site also features imbedded video for some songs.
A well-developed cellular parenchyma forms a matrix in which the muscular, excretory and generative organs are imbedded.
The body, or " strobila," consists of a usually minute organ of attachment (scolex or its representative) which is imbedded in the intestinal membrane, and of a series of segments that arise from the base of the scolex and increase in size distally.
