Titlebook: Evolution of the First Nervous Systems; Peter A. V. Anderson Book 1989 Springer Science+Business Media New York 1989 Nervous System.Peptid

Glossy

Catecholamines, Related Compounds and the Nervous System in the Tentacles of Some Anthozoansexus and the muscle. All findings have, however, been confirmed in . and . and, to a lesser degree, in . As far as we could establish the two plexuses are not connected, for, in the tentacles at least, there are no morphological nor histochemical indications of any connections.

accomplishment

Ion Channels of Unicellular Microbesand speculations aside, we have now shown that protozoa, yeast, and even bacteria all have ion channels. It appears that all cellular forms of life have ion channels. We are also forced to conclude that they must have evolved very early.

怒目而視

Differentiation of a Nerve Cell-Battery Cell Complex in ,t. To investigate the formation of this complex, we use the simple fresh water cnidarian .. In this organism, epithelial cells of the gastric region are continuously displaced into tentacles (Campbell, 1967; Dübel et al., 1987), where they interact with sensory nerve cells and nematocytes to form battery cells.

Anthology

可行

并置

鄙視

使入迷

Virtues

責任

https://doi.org/10.1007/978-3-642-90680-0f polyps (e.g. corals), but also mixed colonies of polyps and medusae exist. The physonectid siphonophores, for example, are swimming hydrozoans consisting of a long stem to which numerous medusae and various forms of polyps are attached.