A Monograph of the Fresh-water Polyzoa: Including All the Known Species, Both British and Foreign, Tema 28 |
Dentro del libro
Resultados 1-3 de 18
Página 21
The retractor fibres are obviously homologous with the great retractor muscles of
the others . The mouth , which occupies its normal position in the body of the
lophophore , opens into an esophagus , which after a short course terminates in
the ...
The retractor fibres are obviously homologous with the great retractor muscles of
the others . The mouth , which occupies its normal position in the body of the
lophophore , opens into an esophagus , which after a short course terminates in
the ...
Página 24
In all these the disposition of the muscles is exceedingly similar ; eight distinct
sets may be considered as more or less positively demonstrated . ( 1. ) Retractor
Muscles of the Polypide . These , which are the largest and most powerful
muscles ...
In all these the disposition of the muscles is exceedingly similar ; eight distinct
sets may be considered as more or less positively demonstrated . ( 1. ) Retractor
Muscles of the Polypide . These , which are the largest and most powerful
muscles ...
Página 30
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 ...
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 ...
Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Otras ediciones - Ver todas
A Monograph of the Fresh-water Polyzoa: Including All the Known ..., Tema 28 George James Allman Vista de fragmentos - 1856 |
Términos y frases comunes
adherent admit Alcyonella alimentary alimentary canal Allman already anatomy animal appearance Ascidian attached become Beneden bodies branches branchial British canal cavity cell characters cilia closely complete condition connected consists constitutes contained continuous corresponding Cristatella crown described detected disc distinct Dumortier ectocyst edit endocyst entire epistome examined existence extending external extremity fibres fluid Fredericella fresh-water Polyzoa genera genus Gervais gives important internal latter layer Leidy lophophore Lophopus margin mass Mém membrane memoir minute mouth muscles Natural naturalists nearly observed occur organs orifice Original figures Paludicella passes Plumatella Plumatella repens Polype polypide Polyzoon portion present published relations repens resemblance retraction retractor Rösel seen separated sheath side space species specimens statoblasts stomach stones structure surface surrounding tentacula transparent transverse Trembley true tubes Tubularia tunic Tunicata walls whole young