A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
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Página 7
... œsophagus , stomach , and intestine , to be furnished at its origin with long ciliated tentacula , and to have a single nervous ganglion situated on one side of the oesophagus . Let us now suppose this canal to be bent back upon itself ...
... œsophagus , stomach , and intestine , to be furnished at its origin with long ciliated tentacula , and to have a single nervous ganglion situated on one side of the oesophagus . Let us now suppose this canal to be bent back upon itself ...
Página 17
... oesophagus , rapidly diminishing in diameter till it terminates in a distinct anus by perforating the tentacular ... œsophagus ( fig . 3 , ƒ ) is wide , and may perhaps here , more decidedly than in the other species , be distinguished ...
... oesophagus , rapidly diminishing in diameter till it terminates in a distinct anus by perforating the tentacular ... œsophagus ( fig . 3 , ƒ ) is wide , and may perhaps here , more decidedly than in the other species , be distinguished ...
Página 18
... œsophagus , experiences in this tube no delay , but is rapidly conveyed downwards by a kind of peri- staltic action , and delivered to the stomach ; and at the moment of the passage of the alimentary matter from the oesophagus into the ...
... œsophagus , experiences in this tube no delay , but is rapidly conveyed downwards by a kind of peri- staltic action , and delivered to the stomach ; and at the moment of the passage of the alimentary matter from the oesophagus into the ...
Página 22
... œsophagus and rectum , but separated from the latter by the whole mass of the generative system , is the nervous ganglion , close to which , and lying between it and the oesophagus , is a peculiar organ in the form of a minute tubular ...
... œsophagus and rectum , but separated from the latter by the whole mass of the generative system , is the nervous ganglion , close to which , and lying between it and the oesophagus , is a peculiar organ in the form of a minute tubular ...
Página 36
... oesophagus , stomach , and intestine . The rudimentary parieto - vaginal muscles may also be seen extending from the tentacular sheath to the walls of the cell ; the thick , fleshy mass , by which the body of the polypide was connected ...
... oesophagus , stomach , and intestine . The rudimentary parieto - vaginal muscles may also be seen extending from the tentacular sheath to the walls of the cell ; the thick , fleshy mass , by which the body of the polypide was connected ...
Otras ediciones - Ver todas
A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
A Monograph of the Fresh-Water Polyzoa, Including All the Known Species ... George James Allman Sin vista previa disponible - 2009 |
Términos y frases comunes
adherent Alcyonella Alcyonella fungosa Alcyonella stagnorum alimentary canal Allman anatomy animal annulus Ascidian attached become Beneden Bowerbankia Brachiopoda branches branchial sac Brit Brux campanulata cavity cell cilia cœnocium crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst embryo endocyst epistome exserted external fibres flabellum fluid fresh-water Polyzoa funiculus ganglion genera genus Gervais hæmal Hancock hippocrepian Hist homologous intestine invaginated l'Acad Lamarck layer Leidy Linnæus lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed œsophagus organ orifice Original figures ovary ovum Paludicella parieto-vaginal muscles peculiar Pedicellina perigastric space Plumatella repens Polype à Panache polypide Polyzoon portion posterior present Raspail respiratory retraction retractor retractor muscles Rösel seen septa side species specimens statoblasts stomach structure surface tentacles tentacula tentacular crown tentacular sheath thoracic chamber transparent transverse Trembley tubes Tubularia repens tunic Tunicata Urnatella walls Zooph Zoophytes