. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Prox. Eso. Dist. Eso. Stom. & Si. Caec., Int. & Rec. SPATANGOIDA MERIDOSTERNATA 1 SP. SPATANGOIDA AMPHISTERNATA 3 FIGURE 3. The detailed distributional patterns and histochemistry of the gut mucous cells in irregular echinoids. For the order Clypeasteroida, the gut is represented diagram- matically by a set of four cross sectional diagrams, complete for the pharynx and esophagus, but partial for other gut regions; the names of the gut regions are abbreviated as in Figure 1. The order Spatangoida is represented b
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Prox. Eso. Dist. Eso. Stom. & Si. Caec., Int. & Rec. SPATANGOIDA MERIDOSTERNATA 1 SP. SPATANGOIDA AMPHISTERNATA 3 FIGURE 3. The detailed distributional patterns and histochemistry of the gut mucous cells in irregular echinoids. For the order Clypeasteroida, the gut is represented diagram- matically by a set of four cross sectional diagrams, complete for the pharynx and esophagus, but partial for other gut regions; the names of the gut regions are abbreviated as in Figure 1. The order Spatangoida is represented by two sets of cross sectional diagrams, one for the suborder Meridosternata and one for the suborder Amphisternata. For the order Spatangoida, which lacks a pharynx, two complete cross sectional diagrams are presented for the esophagus (Prox. Eso., proximal esophagus and Dist. Eso., distal esophagus) ; other spatangoid gut regions are represented by partial cross sectional diagrams, the names of which are abbreviated as in Figure 1. In the distal esophagus of amphisternate spatangoids, the simple acinous glands are actually embedded in a thick middle layer of the gut wall that has not been included in any of the diagrams. In the diagrams, sulfated acid mucus is represented by solid black, nonsulfated acid mucus by cross hatching and neutral mucus by stippling. the family Clypeasteridae, virtually the entire epithelium was composed of aggre- gated mucous cells containing sulfated acid mucus. In the esophagus of the family Scutellidae, aggregated mucous cells containing sulfated acid mucus lined some or all of the longitudinal esophageal grooves but were absent from the regions of thick esophageal epithelium; Reisman (1965) termed these cells esophageal goblet cells in Dendrastcr excentricus. There were no mucous cells of any kind in the stomach, siphon, intestine and rectum of clypeasteroids. The mucous cells that. Please note that these images are extracted from scanned page im
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
