. Cephalopoda. Cephalopoda. FIGURE 46. Suckers of II le X coindeti in different stages of function. Diagrammatic median sections, highly magnified: a — resting position; b — first adhesion to a smooth surface; c,d — effect of escape attempts of prey and countermove of the predator (arrows); Gr — pocket into which the stalk is inserted; Sk — suction pad; Ka — suction chamber; Hr — horny ring; Hf — adhesion ring; Ar — marginal ring; Hz — main tooth; Fa — fold, actually the narrowest place of the suction pad area situated below the eccentric pocket; Vz — smaller tooth; St — stalk; Bp — basal pad;
. Cephalopoda. Cephalopoda. FIGURE 46. Suckers of II le X coindeti in different stages of function. Diagrammatic median sections, highly magnified: a — resting position; b — first adhesion to a smooth surface; c,d — effect of escape attempts of prey and countermove of the predator (arrows); Gr — pocket into which the stalk is inserted; Sk — suction pad; Ka — suction chamber; Hr — horny ring; Hf — adhesion ring; Ar — marginal ring; Hz — main tooth; Fa — fold, actually the narrowest place of the suction pad area situated below the eccentric pocket; Vz — smaller tooth; St — stalk; Bp — basal pad; Bt — prey. The conditions resemble in principle those shown in Figure 29c, but differ in the markedly eccentric insertion of the stalk and the lack of circular muscles in the Teuthoidea or Oegopsida. The function illustrated here is stictly mechanical and persists as long as 24 hours after death, when decomposition has already begun. De- tachment of the suckers takes place by gliding if there is no pull. The mouth area is of particular interest. As in Protodibranchus and the Tetrabranchiata, there is a circle of oral arms, known as the buccal 113. 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 Naef, Adolf. Jerusalem : Israel Program for Scientific Translations
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectcephalopoda
