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
... 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 towards the side of the ...
... 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 towards the side of the ...
Página 16
... intestine ( h ) ; it springs from the pyloric cavity , with which it communicates by a very defined orifice ( Pl . III , fig . 7 , ' ) . The structure of the pylorus is such as to admit of the orifice . * Lehrbuch der Vergleichenden ...
... intestine ( h ) ; it springs from the pyloric cavity , with which it communicates by a very defined orifice ( Pl . III , fig . 7 , ' ) . The structure of the pylorus is such as to admit of the orifice . * Lehrbuch der Vergleichenden ...
Página 17
... intestine ( ) . This tube presents , just after its origin , a wide dilation , and then suddenly con- tracting , continues as a narrow cylindrical canal to its termination just below the mouth . The histological structure of the ...
... intestine ( ) . This tube presents , just after its origin , a wide dilation , and then suddenly con- tracting , continues as a narrow cylindrical canal to its termination just below the mouth . The histological structure of the ...
Página 18
... intestine closely resembles that of the œsophagus ; vibratile cilia however , are altogether absent . In Cristatella , the cells of the internal layer corresponding to the middle layer of the stomach are large , and filled , in the well ...
... intestine closely resembles that of the œsophagus ; vibratile cilia however , are altogether absent . In Cristatella , the cells of the internal layer corresponding to the middle layer of the stomach are large , and filled , in the well ...
Página 20
... intestine . d k Fig . 3 . f .... • h b .... ... 9 PLAN OF PEDICELLINA . Fig . 4 . Fig . 3. Longitudinal section . Fig 4. Front view of lophophore and contiguous parts . Ectocyst . 6. Endocyst . c . Invaginated portion of endocyst ...
... intestine . d k Fig . 3 . f .... • h b .... ... 9 PLAN OF PEDICELLINA . Fig . 4 . Fig . 3. Longitudinal section . Fig 4. Front view of lophophore and contiguous parts . Ectocyst . 6. Endocyst . c . Invaginated portion of endocyst ...
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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