A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign |
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Página 21
Nervous filaments, and certain bands, probably muscular, to be presently
described, may be traced as far as the root of each tentacle, and ... The retractor
fibres are obviously homologous with the great retractor muscles of the others.
Nervous filaments, and certain bands, probably muscular, to be presently
described, may be traced as far as the root of each tentacle, and ... The retractor
fibres are obviously homologous with the great retractor muscles of the others.
Página 30
_4 longer pressed upon by the contraction of the endocyst, the great retractor
muscles act directly on the polypide and withdraw it into the cell, the anterior and
posterior parietovaginal muscles in Paludicella drawing after it as it descends
that ...
_4 longer pressed upon by the contraction of the endocyst, the great retractor
muscles act directly on the polypide and withdraw it into the cell, the anterior and
posterior parietovaginal muscles in Paludicella drawing after it as it descends
that ...
Página 64
He does not admit the existence of distinct muscles, and maintains that Trembley
erroneously ascribed retractor muscles to his “ Polype a Panache," asserting that
he has mistaken for them the inverted tentacular sheath. Here also, Raspail, in ...
He does not admit the existence of distinct muscles, and maintains that Trembley
erroneously ascribed retractor muscles to his “ Polype a Panache," asserting that
he has mistaken for them the inverted tentacular sheath. Here also, Raspail, in ...
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A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Volumen28 George James Allman Vista de fragmentos - 1856 |
Términos y frases comunes
adherent Alcyonella alimentary canal Allman anatomical animal annulus Ascidian attached become Beneden branches branchial sac Brit Brux campanulata cavity cell cilia coenoecium confined crescentic Cristatella mucedo d’eau douce described disc distinct Dumortier ectocyst embryo endocyst epistome exserted external fibres fig filament filled find first floating fluid Flustrae Fredericella fresh-water Polyzoa funiculus ganglion gemma genera genus Gervais Hancock hippocrepian Hist homologous intestine invaginated l’Acad Lamarck layer Leidy Lop/zopus lophophore Lophopus magnified margin Mém membrane memoir Meyen Miiller mouth Naisa naturalists observed oesophagus orifice Original figures ovary ovum Paludicella peculiar Pedicellina perigastric space Plumatella repens Polype Polype a Panache polypide Polyzoon portion posterior present Raspail respiratory retraction retractor retractor muscles Rosel seen septa side sinus species specific specimens statoblasts stomach structure sultana surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph