Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 15
Pagina 34
... ceased to move , the latter continues to perform whatever movements are characteristic of it in the unmuti- lated organism - indeed , these movements are not at all interfered with even by a complete severance of the manubrium from the ...
... ceased to move , the latter continues to perform whatever movements are characteristic of it in the unmuti- lated organism - indeed , these movements are not at all interfered with even by a complete severance of the manubrium from the ...
Pagina 73
... ceased to pass ) , I can scarcely doubt that in every case the blocking is caused by the cutting through of nerves . * In a highly interesting paper recently published by Dr. W. H. Gaskell , F.R.S. , on " The Innervation of the Heart ...
... ceased to pass ) , I can scarcely doubt that in every case the blocking is caused by the cutting through of nerves . * In a highly interesting paper recently published by Dr. W. H. Gaskell , F.R.S. , on " The Innervation of the Heart ...
Pagina 137
... ceased , the natural * When two such waves met , they neutralized each other at their line of collision ; or perhaps more correctly , the tissue on each side of that line , having just been in contraction , was not able again to convey ...
... ceased , the natural * When two such waves met , they neutralized each other at their line of collision ; or perhaps more correctly , the tissue on each side of that line , having just been in contraction , was not able again to convey ...
Pagina 142
... ceased its swimming motions altogether . The animal , however , is not actually dead ; for if while lying motionless at the bottom of the vessel it be gently stimulated , it will respond with a spasm as usual , and perhaps immediately ...
... ceased its swimming motions altogether . The animal , however , is not actually dead ; for if while lying motionless at the bottom of the vessel it be gently stimulated , it will respond with a spasm as usual , and perhaps immediately ...
Pagina 144
... ceased , while irritability remained . After a time spontaneity began to return , and its first stages were marked by a complete want of co - ordination ; soon , however , co - ordination was again restored . But this experi- ment by no ...
... ceased , while irritability remained . After a time spontaneity began to return , and its first stages were marked by a complete want of co - ordination ; soon , however , co - ordination was again restored . But this experi- ment by no ...
Termeni și expresii frecvente
able ambulacral feet artificial rhythm Aurelia aurita become bell blocked brium cause ceased chloroform co-ordination continue contractile strip contractile tissue contraction contraction-waves covered-eyed Medusa crawling curare diastole direction discharge Echinoderm Echinodermata Echinus effect excising excitable tissues experiments fact feeble fibres forceps fresh water function ganglionic glycerine hour Illustrations induction shocks influence instance intervals irritability jelly-fish latter lithocyst locomotor centres manubrium marginal bodies marginal ganglia minutes movements muscle muscular mutilated naked-eyed Medusa natural rhythm nectocalyx nerve nerve-cells nerve-centre nerve-fibres nerve-ring nerve-trunks nervous network nervous system normal sea-water observed occur organ paralyzed pass pedicellariæ pedicels period of latent physiological plexus poison portion prepotent Professor pulsations radial tubes rays reflex reflex action removed response Sarsia seconds segments spasm species specimens spines spontaneity Star-fish strychnia suckers surface swimming motions swimming-bell systole tank temperature tentacles tentacular tetanus Tiaropsis indicans tion umbrella unmutilated animal wave whole