Lectures on the Comparative Anatomy and Physiology of the Invertebrate Animals: Delivered at the Royal College of Surgeons, in 1843 |
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Page 12
... nervous system . Cuvier thereupon applied himself with inde- fatigable industry to ascertain the arrangement of the nerves in the Invertebrata , and after a long series of minute and elaborate dissections , he discovered three ...
... nervous system . Cuvier thereupon applied himself with inde- fatigable industry to ascertain the arrangement of the nerves in the Invertebrata , and after a long series of minute and elaborate dissections , he discovered three ...
Page 13
... nervous system bears the form of a ring , surrounding the gullet , from which the nerves radiate , often unsymmetrically , to different 3 parts of the body ( fig . 2. ) : the brain is represented by ganglions above ( a ) or at the side ...
... nervous system bears the form of a ring , surrounding the gullet , from which the nerves radiate , often unsymmetrically , to different 3 parts of the body ( fig . 2. ) : the brain is represented by ganglions above ( a ) or at the side ...
Page 15
... nervous system could be most unequivocally traced in a filamentary form , likewise presented an alimentary canal ... nerves governed a cor- responding development of the muscular system ; and generation was always by impregnated ova ...
... nervous system could be most unequivocally traced in a filamentary form , likewise presented an alimentary canal ... nerves governed a cor- responding development of the muscular system ; and generation was always by impregnated ova ...
Page 20
... nervous matter has yet been detected in the Polygastric Infusoria ; but its presence is indicated by the coloured eye - speck ( fig . 9. c . ) in certain genera : and nervous conductors of impressions are no less requisite for reflex ...
... nervous matter has yet been detected in the Polygastric Infusoria ; but its presence is indicated by the coloured eye - speck ( fig . 9. c . ) in certain genera : and nervous conductors of impressions are no less requisite for reflex ...
Page 35
... nervous system now likewise become distinctly visible . Ehren- berg delineates a large cerebral ganglion , which in some species is of a trilobate form , in close connection with the coloured , generally red , ocellus or eye - speck ( e ) ...
... nervous system now likewise become distinctly visible . Ehren- berg delineates a large cerebral ganglion , which in some species is of a trilobate form , in close connection with the coloured , generally red , ocellus or eye - speck ( e ) ...
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Common terms and phrases
abdomen alimentary canal analogous Anatomy Anellides animal animalcules antennæ aperture appendages Ascidians attached Belemnite bivalves blood body branchiæ branchial Bryozoa calcareous cavity cells cephalic Cephalopods chords ciliated cloth colour compound eyes consists Crustacea Cuvier developed digestive dilated Diseases distinct dorsal duct Edition elongated embryo Entozoa external extremity eyes female filaments fluid ganglion Gasteropods genus germinal vesicle gills glands head horny Infusoria insects integument interspace intestine jointed larva larvæ layer LECTURE legs locomotive London longitudinal male mandibles mantle margin mass maxillæ membrane metamorphosis minute Mollusca mouth muscles muscular fibres muscular system Nautilus nerves nervous system observed ocelli oesophagus organisation organs orifice ovaria oviduct ovum pair parasitic plates polypes posterior present processes radiated respiratory rudimental segments shell side siphon slender species spiders spines stomach structure surface tentacles tentacula terminal thorax tissue transverse tube tunic vascular ventral vesicle vessel visceral wings worm
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