A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and ForeignRay Society, 1856 - 119 páginas |
Dentro del libro
Resultados 6-10 de 19
Página 26
... fibres is but obscurely indicated , I have no hesitation in viewing this structure as a sphincter muscle on which the contraction in question is dependent . The action of the sphincter closes the sheath after the recession of polypide ...
... fibres is but obscurely indicated , I have no hesitation in viewing this structure as a sphincter muscle on which the contraction in question is dependent . The action of the sphincter closes the sheath after the recession of polypide ...
Página 27
... fibres ( Pl . V , figs . 5 , 6 , v ) were mentioned as entering into the composition of this tunic , and taking a transverse direction round the cell . These may be designated by the name of parietal muscles . They may generally be seen ...
... fibres ( Pl . V , figs . 5 , 6 , v ) were mentioned as entering into the composition of this tunic , and taking a transverse direction round the cell . These may be designated by the name of parietal muscles . They may generally be seen ...
Página 28
... fibres of the anterior parieto - vaginal muscles . The action of the anterior parieto - vaginal muscles assists in the invagination of the tube , and dilates it when completely retracted ; they thus act as antagonistic to the vaginal ...
... fibres of the anterior parieto - vaginal muscles . The action of the anterior parieto - vaginal muscles assists in the invagination of the tube , and dilates it when completely retracted ; they thus act as antagonistic to the vaginal ...
Página 29
... fibres of these muscles soon check its further progress , keeping one portion per- manently invaginated , and affording a fixed point on which the remainder may roll outwards . This second portion of the invaginated membrane , which in ...
... fibres of these muscles soon check its further progress , keeping one portion per- manently invaginated , and affording a fixed point on which the remainder may roll outwards . This second portion of the invaginated membrane , which in ...
Página 30
... fibres , totally separate from one another through their entire course . The fibres of the great retractor muscle are distinctly marked with transverse striæ , a condition , however , which is not at all times equally perceptible ; and ...
... fibres , totally separate from one another through their entire course . The fibres of the great retractor muscle are distinctly marked with transverse striæ , a condition , however , which is not at all times equally perceptible ; and ...
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 crescentic Cristatella Cristatella mucedo d'eau douce described Difflugia disc distinct Dumortier ectocyst Ehrenbergi 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 longitudinal lophophore Lophopus crystallinus margin Mém membrane memoir Meyen mouth Müller Naisa naturalists observed oesophagus 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