. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 264 V. J. \VULFF 3. The significance o\ the tico Aliases The rapid disappearance of the initial phase upon light adaptation, coupled with the fact that low intensity light flashes elicit only the initial phase, suggests that this response may he associated with receptor cells of greater sensitivity than those which give rise to the second phase. This consideration implies that the lateral eye of Limulus contains t\vo functionally different kinds of sense cells. It is of great interest that two structurally different kinds of
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 264 V. J. \VULFF 3. The significance o\ the tico Aliases The rapid disappearance of the initial phase upon light adaptation, coupled with the fact that low intensity light flashes elicit only the initial phase, suggests that this response may he associated with receptor cells of greater sensitivity than those which give rise to the second phase. This consideration implies that the lateral eye of Limulus contains t\vo functionally different kinds of sense cells. It is of great interest that two structurally different kinds of sense cells have heen described for the lateral eye of Limulus (Demoll, 1(>14). The complex eye of Limulus is com-. FIGURE 5. Diagrammatic representation of a longitudinal section through an ommatidium from the lateral eye of Limulus showing the radial retinal cells and the eccentric retinal cell with its central process, all embedded in an epithelial framework. (From Demoll, 1914.) prised of many visual units, the ommatidia. All ommatidia, according to Demoll (1914), possess a similar spatial arrangement of receptor cells (Fig. 5). There are a group (10-15 ) of receptor cells radially arranged about the longitudinal axis of the ommatidium, leaving a hollow core in the center. This core is partially occluded by a process originating from an eccentrically located sense cell (Fig. 5). In each ommatidium there is only one eccentric sense cell and this seldom contains pigment, whereas the radially located sense cells often contain pigment (Demoll,. 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 Clarenc
Size: 1234px × 2024px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
