. Zur Anatomie von Wirbeltieren [elektronische Ressource] . Oberflächliche und geloopte Gefäße der Vaso-Ganglionair-Blase, Cod. Cclxviii. Mit feinen villiformen Prozessen.das Blut kehrt aus den Vaso-Ganglions durch kleine Venen zurück, die selten, häufiger, die Arterien begleiten. 4. Die beiden Häuptlinge (retia mirabilia, oder Vasoganglionen, in der Luftblase des Eels und des Congers, die an den Seiten der Öffnung des Luftkanals liegen, sind ebenfalls bipolar und bestehen aus beiden Arteriolen und Venolen: Sie bestehen aus geraden parallelen Kapillaren, wie in Abb. 329 : Ihre efferent Trunks nicht verzweien
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. On the anatomy of vertebrates [electronic resource] . Superficial and looped vessels of the vaso-ganglionair-bladder, Cod. cclxviii. with fine villiform processes.The blood returns from the vaso-ganglions by small veins which rarely accompany, more commonlycross, the arteries. 4. The two chief (retia mirabilia, or vaso-ganglions, in the air-bladder of the Eel and Conger, which aresituated at the sides of the opening of the air-duct, are alsoe bipolar, and consist of both arterioles and venules: they consistof straight parallel capillaries, as in fig. 329 : their efferent trunksdo not ramify in the immediate margin of the vaso-ganglion fromwhich they issue, as in the vaso-ganglions of the Cod, Burbot, Acerine, and Perch, but run for some distance before theyagain branch to form the common capillary system of the liningmembrane of the air-bladder. Rathke1 failed to detect the opening of the air-duct with the1 cxi. Ucber die Schwimm-blase ciniger Fische, p. 98. 496 ANATOMY OF VERTEBRATES. 329. Parallel vessels of the vaso-ganglion of the air-bladder, Eel. cclxviii. oesophagus in the Eel; but De la Roche had well described theoblique aperture, 1 and accurately cites the whole family of theEels as fishes having both the so-called air-gland and thepneumatic duct. It had been supposed that the vascular 6 air-gland was present only in those fishes which could not derivethe gaseous contents of their swim-bladder from without; andunquestionably in those fishes which have the shortest andwidest ducts (Sturgeon, Ami a, Erythrinus, Lepidosteus, Lepido-siren, Polypterus) the supposed air-secreting vaso-ganglions arenot developed. Since Professor Magnus has determined the existence of free carbonicacid gas, of oxygen, and ofazote in the blood, and dis-solved in different propor-tions in the venous and thearterial blood, it may bereadily conceived that thevenules of the vaso-ganglions may withdraw carbonic acid gasfrom the arterioles, and that these may reach the inner surface ofthe