Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
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Pagina 194
... solution nothing further happens ; the tissues die in this condition of strong systole . But if the bell be transferred to normal sea - water immediately after , or , still better , slightly before the tonic spasm has become complete ...
... solution nothing further happens ; the tissues die in this condition of strong systole . But if the bell be transferred to normal sea - water immediately after , or , still better , slightly before the tonic spasm has become complete ...
Pagina 195
... solutions of glycerine . As in the case of stimulation by acid , so in that of stimulation by glycerine , the artificial rhythm never begins in any strength of solution until the epithelial surface has become opalescent to a con ...
... solutions of glycerine . As in the case of stimulation by acid , so in that of stimulation by glycerine , the artificial rhythm never begins in any strength of solution until the epithelial surface has become opalescent to a con ...
Pagina 196
... solution be not over - strong - is of the same slow character which has already been described as manifested by this organ when under the influence of mechanical stimulation . The rhythm , however , is decidedly quicker in the former ...
... solution be not over - strong - is of the same slow character which has already been described as manifested by this organ when under the influence of mechanical stimulation . The rhythm , however , is decidedly quicker in the former ...
Pagina 197
... solution of glycerine of the strength named , the usual succession of events to be observed is as follows . First , increased activity of the normal swimming motions , to be quickly followed by a rapid and progressive decrease of such ...
... solution of glycerine of the strength named , the usual succession of events to be observed is as follows . First , increased activity of the normal swimming motions , to be quickly followed by a rapid and progressive decrease of such ...
Pagina 198
... solution of glycerine of appropriate strength . After allowing this portion to soak in the solution of glycerine until it became slightly opalescent , I dropped the entire mutilated bell , or sheet of tissue , into another beaker ...
... solution of glycerine of appropriate strength . After allowing this portion to soak in the solution of glycerine until it became slightly opalescent , I dropped the entire mutilated bell , or sheet of tissue , into another beaker ...
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