Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
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Pagina
... STIMULATION ... ... ... : ... IV . EXPERIMENTS IN SECTION OF COVERED - EYED MEDUSÆ 10 26 10 26 37 65 V. EXPERIMENTS IN SECTION OF NAKED - EYED MEDUSÆ 104 VI . CO - ORDINATION VII . NATURAL RHYTHM ... ... ... ... ... ... ... ... 130 146 ...
... STIMULATION ... ... ... : ... IV . EXPERIMENTS IN SECTION OF COVERED - EYED MEDUSÆ 10 26 10 26 37 65 V. EXPERIMENTS IN SECTION OF NAKED - EYED MEDUSÆ 104 VI . CO - ORDINATION VII . NATURAL RHYTHM ... ... ... ... ... ... ... ... 130 146 ...
Pagina 8
... stimulation , but they do so without feeling the stimulus . In order to feel there must be consciousness , and , so far as our evidence goes , it appears that consciousness only arises when a nerve - centre attains to some such degree ...
... stimulation , but they do so without feeling the stimulus . In order to feel there must be consciousness , and , so far as our evidence goes , it appears that consciousness only arises when a nerve - centre attains to some such degree ...
Pagina 7
... stimulation than is the case with the animals which we are about to consider . And if any one should go so far as to object to Mr. Darwin's experiments on these plants on account of its not being demonstrable that the tissues did not ...
... stimulation than is the case with the animals which we are about to consider . And if any one should go so far as to object to Mr. Darwin's experiments on these plants on account of its not being demonstrable that the tissues did not ...
Pagina 24
... stimulation . And it is this readiness of organic tissues to respond to a suitable stimulus that physiologists ... stimulated the attached muscle will contract as before . But it must be carefully observed that there is this great ...
... stimulation . And it is this readiness of organic tissues to respond to a suitable stimulus that physiologists ... stimulated the attached muscle will contract as before . But it must be carefully observed that there is this great ...
Pagina 25
... stimulation . Nerve - fibres , then , are functionally distinguished from muscle - fibres— and also from protoplasm - by displaying the pro- perty of conducting invisible , or molecular , waves of stimulation from one part of an ...
... stimulation . Nerve - fibres , then , are functionally distinguished from muscle - fibres— and also from protoplasm - by displaying the pro- perty of conducting invisible , or molecular , waves of stimulation from one part of an ...
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