Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
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Pagina 11
... contractile tissue . This tissue constitutes the earliest appearance in the animal kingdom of true muscular fibres , and its thickness , which is pretty uniform , is nowhere greater than that of very thin paper . The manubrium is the ...
... contractile tissue . This tissue constitutes the earliest appearance in the animal kingdom of true muscular fibres , and its thickness , which is pretty uniform , is nowhere greater than that of very thin paper . The manubrium is the ...
Pagina 26
... contractile jelly , but that the whole of its concave surface is lined with a thin sheet of muscular tissue . Such being the structure of the organ , the mechanism whereby it effects locomotion is very simple , consisting merely of an ...
... contractile jelly , but that the whole of its concave surface is lined with a thin sheet of muscular tissue . Such being the structure of the organ , the mechanism whereby it effects locomotion is very simple , consisting merely of an ...
Pagina 27
... contractile tissue lining the nectocalyx . of the muscular system , there being no subsequent movements FUNDAMENTAL EXPERIMENTS . 27.
... contractile tissue lining the nectocalyx . of the muscular system , there being no subsequent movements FUNDAMENTAL EXPERIMENTS . 27.
Pagina 29
... contractile tissue be left adhering to a single mar- ginal body cut out of the bell of Sarsia , this tiny piece of tissue , in this isolated state , will continue its contractions for hours , or even for days . Effects of excising the ...
... contractile tissue be left adhering to a single mar- ginal body cut out of the bell of Sarsia , this tiny piece of tissue , in this isolated state , will continue its contractions for hours , or even for days . Effects of excising the ...
Pagina 36
George John Romanes. supply of their locomotor centres scattered through the general contractile tissue of their swimming organs . But although the locomotor centres of a covered - eyed Medusa are thus , generally speaking , more ...
George John Romanes. supply of their locomotor centres scattered through the general contractile tissue of their swimming organs . But although the locomotor centres of a covered - eyed Medusa are thus , generally speaking , more ...
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