. The Biological bulletin. Biology; Zoology; Marine biology. Crusher. Figure 2. Propodites of lobster claws showing lengths used to calculate the mechanical advantage at the dactyl tip (Li/L=)- Li is the distance from the pivot to the insertion of the apodeme onto the dactyl; L2 is the distance from the pivot to the dactyl tip. of about 28° while those in the latter group inserted at a much more acute angle (generally 12°). The fibers in group CuP inserted onto the apodeme at its most proximal edge with no separation into lateral or medial fibers. CuPV inserted only on the medial side of the p
. The Biological bulletin. Biology; Zoology; Marine biology. Crusher. Figure 2. Propodites of lobster claws showing lengths used to calculate the mechanical advantage at the dactyl tip (Li/L=)- Li is the distance from the pivot to the insertion of the apodeme onto the dactyl; L2 is the distance from the pivot to the dactyl tip. of about 28° while those in the latter group inserted at a much more acute angle (generally 12°). The fibers in group CuP inserted onto the apodeme at its most proximal edge with no separation into lateral or medial fibers. CuPV inserted only on the medial side of the proximal ventral edge of the apodeme. In this respect, the fibers of these proximal groups inserted like a parallel-fibered muscle to form longitudinal units instead of the typical pinnate insertion of CuD and CuV. The angle of insertion by fibers in CuP ranged from a maximum of 6° (outermost fibers) to 0°. In CuPV, the range was from 8° to 0°. These proximal groups probably serve as supplementary muscle by occupying the space characteristic of the posterior aspect of pinnate muscle. Distribution of fiber types in the cutter claw. The average sarcomere length of fast fibers in the cutter claws of the 209, 271, and 310 g lobsters was /im; for slow fibers, the average was jiin. For the 3100 g lobster, the mean sar- comere lengths of both fiber classes were somewhat greater: fan for fast fibers and /mi for slow fibers. One point to be noted is the apparent paucity of intermediate fibers in the mid-size range lobsters. Sarcomere lengths in these muscles fell generally into two categories: less than 4 ^m or more than 6 ^m. In the largest lobster, though each mode had a larger average, a major gap still remained between the two types of fiber populations (no sarcomeres were found whose lengths fell between /mi and /im; there was no break in sar- comere lengths ranging from to /mi).. Please note that these images are extracted from scanned page i
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectb, booksubjectzoology
