A manual of zoologyWilliam Blackwood & Sons, 1878 |
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Página 18
... canal which is shut off from the general cavity of the body , and is provided with a separate aperture for the excre- tion of effete and indigestible matters . Digestion is performed by a distinct stomach with accessory glands ; a ...
... canal which is shut off from the general cavity of the body , and is provided with a separate aperture for the excre- tion of effete and indigestible matters . Digestion is performed by a distinct stomach with accessory glands ; a ...
Página 70
... canal - system . 1. Polystomellidea . 2. Nummulitidea . With regard to the classification of the Foraminifera , the author may be excused for quoting some remarks on this subject made by Mr Henry Bowman Brady , F.R.S. , one of the ...
... canal - system . 1. Polystomellidea . 2. Nummulitidea . With regard to the classification of the Foraminifera , the author may be excused for quoting some remarks on this subject made by Mr Henry Bowman Brady , F.R.S. , one of the ...
Página 74
... canal ter- minating at the apex of the spine by a distinct aperture . The spines , in consequence of this structure , are able to serve for the transmission of the pseudopodia , which gain the exterior by running through the canals and ...
... canal ter- minating at the apex of the spine by a distinct aperture . The spines , in consequence of this structure , are able to serve for the transmission of the pseudopodia , which gain the exterior by running through the canals and ...
Página 91
... canal . Near the edge of the disc is situated the mouth , which conducts by its entrance or " vestibulum " into a fusiform canal or " pharynx , " which terminates abruptly in the abdominal cavity . The particles of food are taken in at ...
... canal . Near the edge of the disc is situated the mouth , which conducts by its entrance or " vestibulum " into a fusiform canal or " pharynx , " which terminates abruptly in the abdominal cavity . The particles of food are taken in at ...
Página 99
... canal , which is always distinct from the body - cavity , never opening into it , but usually passing through it to open on the surface by another distinct aperture ( the anus ) . In most cases , therefore , the alimentary canal is a ...
... canal , which is always distinct from the body - cavity , never opening into it , but usually passing through it to open on the surface by another distinct aperture ( the anus ) . In most cases , therefore , the alimentary canal is a ...
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Outras edições - Ver tudo
Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson Pré-visualização indisponível - 2015 |
Palavras e frases frequentes
abdomen adult alimentary canal ambulacral amongst animal Annelides antennæ anus aperture appendages Arachnida articulated attached birds bivalve body bones Brachiopoda branchiæ branchial calcareous carapace cavity cephalothorax chitinous ciliated composed comprising consists contractile Crustacea Ctenophora developed disc distinct division dorsal embryo Eocene external extinct extremity feet females fins fishes Foraminifera fossil furnished gemmation genera genus gills head horny Huxley Hydrozoa incisors Insects integument intestine known labium larva larvæ legs limbs living locomotive males Mammals mandibles margin maxillæ membrane molars Mollusca mouth nervous system operculum organs ovum Owen pairs Paleozoic parasitic placed plates polypide polypites Polyzoa portion possess posterior present regarded reproductive Reptiles resembling respiratory Rotifera rudimentary Scolecida segments shell side Silurian single skeleton sometimes somites species spines stomach structure sub-order surface tail teeth tentacles termed thorax toes transverse tube upper usually valves ventral Vertebrates vesicle whilst wings Zoantharia zooids