A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Página 20
... Stomach . h . Rectum . i . Anus . k . Epistome . 7. Ganglion . m . Generative organ . n . Retractor muscle . o . Lophophore . The tentacula are connected to one another at their base by a membrane which adheres to their back , extending ...
... Stomach . h . Rectum . i . Anus . k . Epistome . 7. Ganglion . m . Generative organ . n . Retractor muscle . o . Lophophore . The tentacula are connected to one another at their base by a membrane which adheres to their back , extending ...
Página 21
... stomach . This is a large sac which lies in the bottom of the cell ; close to the pyloric orifice it becomes much constricted , and this constricted portion passes into the intestine whose origin is nearly on a level with the cardiac ...
... stomach . This is a large sac which lies in the bottom of the cell ; close to the pyloric orifice it becomes much constricted , and this constricted portion passes into the intestine whose origin is nearly on a level with the cardiac ...
Página 24
... stomach . The action of the retractor muscles is very obvious ; having a com- paratively fixed point of attachment near the bottom of the cell , they retract the whole alimentary canal with the tentacular crown , so as to place them in ...
... stomach . The action of the retractor muscles is very obvious ; having a com- paratively fixed point of attachment near the bottom of the cell , they retract the whole alimentary canal with the tentacular crown , so as to place them in ...
Página 27
... stomach ; this has already been described in connection with the histology of the alimentary canal , and need not be further referred to here . b . Muscles of Paludicella . The muscular system of Paludicella differs in some important ...
... stomach ; this has already been described in connection with the histology of the alimentary canal , and need not be further referred to here . b . Muscles of Paludicella . The muscular system of Paludicella differs in some important ...
Página 32
... stomach , and by the other to the endocyst near the bottom of the cell . We may , with Huxley , designate this appendage by the term funiculus . The testicle is composed of a mass of spherical cells , each of which contains within it ...
... stomach , and by the other to the endocyst near the bottom of the cell . We may , with Huxley , designate this appendage by the term funiculus . The testicle is composed of a mass of spherical cells , each of which contains within it ...
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