. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Figs. 1—2. Diagrams of the gastrovascular sj-steni and genital organs of a typical, tentaculate, Ctenophore (Fig. i) and of Tjalfiella (Fig. 2). ar. v. adradial vessel (in Tjalfulla represented by the genital vesselt; br. c. branching gastrovascular canals; ch. o. "chimney" opening; ir. v. interradial vessel; m. v. meridian vessel; ph. pharynx; ph. v. pharyngeal vessel; t. tentacle; tr. V. transverse vessel; t. sh. tentacular sheath; t. v tentacular vessel. The gastrovascular sys
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. Figs. 1—2. Diagrams of the gastrovascular sj-steni and genital organs of a typical, tentaculate, Ctenophore (Fig. i) and of Tjalfiella (Fig. 2). ar. v. adradial vessel (in Tjalfulla represented by the genital vesselt; br. c. branching gastrovascular canals; ch. o. "chimney" opening; ir. v. interradial vessel; m. v. meridian vessel; ph. pharynx; ph. v. pharyngeal vessel; t. tentacle; tr. V. transverse vessel; t. sh. tentacular sheath; t. v tentacular vessel. The gastrovascular system. From the infundibulum proceeds to each side in the transverse (tentacular) plane a rather large vessel which continues to the tentacle, sending a branch into each side-half of the tentacle-base, as is the usual condition in Ctenophores. From this main vessel (the transverse canal) further proceeds a small branch towards each genital organ, into the lumen of which it opens. Finally a large branch divides off from the main vessel below each subtentacular genital organ; this branch continues into the walls of the bod\-, where it ramifies, forming thus the branching canals so conspicuous through the transparent epidermis, especially on the "chimneys". (PI. Ill, Figs. 9 and 10 show the relation of the genital canals and the branching canal to the main vessel; the open- The Ingolf-Expedition. V. 2. *. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Danish Ingolf-Expedition (1895-1896); Københavns universitet. Zoologisk museum. Copenhagen H. Hagerup
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
