Jelly-fish, star-fish and sea-urchinsD. Appleton and Company, 1898 - 323 pagini |
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Pagina 8
... applied to the lower extremities is unable to pass upwards to the brain , the feet will be actively drawn away from a source of irritation without the man being conscious of any pain ; the lower nervous centres in the spinal cord ...
... applied to the lower extremities is unable to pass upwards to the brain , the feet will be actively drawn away from a source of irritation without the man being conscious of any pain ; the lower nervous centres in the spinal cord ...
Pagina 8
... applied to the lower extremities is unable to pass upwards to the brain , the feet will be actively drawn away from a source of irritation without the man being conscious of any pain ; the lower nervous centres in the spinal cord ...
... applied to the lower extremities is unable to pass upwards to the brain , the feet will be actively drawn away from a source of irritation without the man being conscious of any pain ; the lower nervous centres in the spinal cord ...
Pagina 11
... applied to the other portion of the animal . The manubrium , like the umbrella , varies much in size and shape in different species , as a glance at any figures of these animals will show . Both the manubrium and umbrella are almost ...
... applied to the other portion of the animal . The manubrium , like the umbrella , varies much in size and shape in different species , as a glance at any figures of these animals will show . Both the manubrium and umbrella are almost ...
Pagina 24
... applied directly to its own substance , in the latter case the muscle responded to a stimulus applied at a distance from its own substance , which stimulus was then conducted to the muscle by the nerve . And in this we perceive the ...
... applied directly to its own substance , in the latter case the muscle responded to a stimulus applied at a distance from its own substance , which stimulus was then conducted to the muscle by the nerve . And in this we perceive the ...
Pagina 25
... applied to a nerveless muscle can only course through the muscle by giving rise to a visible wave of contraction , which spreads in all directions from the seat of disturbance as from a A nerve , on the other hand , conducts the ...
... applied to a nerveless muscle can only course through the muscle by giving rise to a visible wave of contraction , which spreads in all directions from the seat of disturbance as from a A nerve , on the other hand , conducts the ...
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