. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. MUSCLE ACTIVITY IN LIMULUS FEEDING 573 'al promoter and remotor movements The activity of muscles during the coxal promotor-remotor swing (Manton, 1964) was examined for comparison to activity during chewing. The animals were allowed to walk over a glass plate in air. In contrast to transverse rotation about the dorsolateral pivot in chewing, the anterior-posterior coxal swing must involve two functional pivots. In addition to the fixed dorsolateral pivot, a second indistinct point near the gnathobase at the ventromedial
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. MUSCLE ACTIVITY IN LIMULUS FEEDING 573 'al promoter and remotor movements The activity of muscles during the coxal promotor-remotor swing (Manton, 1964) was examined for comparison to activity during chewing. The animals were allowed to walk over a glass plate in air. In contrast to transverse rotation about the dorsolateral pivot in chewing, the anterior-posterior coxal swing must involve two functional pivots. In addition to the fixed dorsolateral pivot, a second indistinct point near the gnathobase at the ventromedial coxal margin is also CHEWING. 25 FIGURE 6. Summary of muscle activities of all preparations during normal ingestive chew- ing. Black bars indicate the period during which a muscle was usually or always active. Dotted areas indicate periods when muscle was sometimes active. Crosshatched areas indicate periods of synchronous, positive-going activity (inhibition?) in 38a, 38p, 39, and 40. For 29, the three common activity patterns are shown. stationary. The coxa then swings like a door around two hinges. The general pattern of muscle activity during this swing was as follows (see Figs. 9 and 10) : muscles 26, 27, and 38a, which attach to the anterior face of the coxa, were active during forward movement (promotion). Muscles 25, 38p, and 39, which attach. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
