Biology of the Integument: 2 Vertebrates by A. Gedeon Matoltsy, Jürgen Bereiter-Hahn (auth.), Prof. Dr.

By A. Gedeon Matoltsy, Jürgen Bereiter-Hahn (auth.), Prof. Dr. Jürgen Bereiter-Hahn, Prof. Dr. A. Gedeon Matoltsy, Dr. K. Sylvia Richards (eds.)

The integument performs an immense function within the survival of meta­ zoans through setting apart and keeping them from a adverse environ­ ment. Its functionality levels from defense opposed to damage and in­ fection, participation within the rules of physique temperature and water stability, to respiration job, tracking of the environ­ ment and construction of indications relating to behaviour. these kind of outcome from particular structural, biochemical and physiological houses of intra-and extracellular parts of the integu­ ment. hence its characterization will be most sensible finished by means of a multidisciplinary method with authors really good in several fields of technology. This multi-author ebook, in volumes, presents an up-to­ date survey of the literature. the 1st quantity offers with the integument of invertebrates, the second one with that of vertebrates, either equipped totally on a phylum foundation. because the point of data at the integument of phyla differs significantly, the knowledge supplied is correspondingly both constrained or con­ densed. For a number of the smaller teams of invertebrates little details is on the market, as frequently just a couple of electron micrographs are to be present in the literature ; nevertheless, from the massive physique of data latest for vertebrates, quite for mammals, no whole evaluation might be supplied, yet publica­ tions giving entry to extra info were reviewed critically.

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10) and others come to free endings (Whitear 1971 a, 1983). Nerves passing the basement membrane lose the Schwann sheath and ramify either between, or wrapped in, the epithelial cells. Some clupeid fish be ar tiny projections (tags) on the head and margins of the scales; varicose nerve fibres run up between a central column of cells and a superficial layer (Fox et al. 1980; Blaxter et al. 1983). Similar structures on a perciform, Stenotomus, have a single elongated central cell (Harding et al. 1981).

1) and although in the mature stage the nuc1eus is degenerate and eentral it is peripheral earlier. The eytoplasm is eleetron-dense, as it is in many go bIet eells of teleosts. In general, goblet eells contain much rER and prominent Golgi systems, and have fewer desmosomes than epithelial eells. 3 Saeeiform Cells Early in this century certain basi-nuc1eate unicellular glands were distinguished from goblet cells beeause their seeretion was eosinophilie. Studies of the fine strueture eventually showed that the seeretion is segregated in a large membranebounded vaeuole, typieally surrounded by small vaeuoles or ehannels supplying the seeretion.

This is also the case in S. trutta (Rarris et al. 1973; Pickering 1974). Bremer (1972) found acid glycoproteins in the go biet cells of the majority of 50 species of fish, but in some species the reactions were for neutral glycoprotein. A comparative study by Bullock (1980) on gadoid fishes found no sulphated glycoprotein in the goblet cells of deep sea species; the secretion might be either sialylated or neutral, but goblet cells were not numerous. Shallow-water species fell into two groups, one producing more sulphated glycoprotein than the other.

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