. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. KCHINOID RESPIRATORY PODIA 327. 20 B FIGL-RE 3. Details of the tube foot wall and septum of 6\ pitrpuratits. (A.) Detail of the junction of the connective tissue in the podial wall and the septum, from a cross section of the podium; (B.) detail of the septum sectioned parallel to the length of the tube foot; (a.) epithelium; (b.) outer, circular layer of connective tissue; (c.) middle, longitudinal layer of connective tissue; (d.) inner, circular layer of connective tissue; (e.) muscle cells; (f.) septum; (g.) cross section
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. KCHINOID RESPIRATORY PODIA 327. 20 B FIGL-RE 3. Details of the tube foot wall and septum of 6\ pitrpuratits. (A.) Detail of the junction of the connective tissue in the podial wall and the septum, from a cross section of the podium; (B.) detail of the septum sectioned parallel to the length of the tube foot; (a.) epithelium; (b.) outer, circular layer of connective tissue; (c.) middle, longitudinal layer of connective tissue; (d.) inner, circular layer of connective tissue; (e.) muscle cells; (f.) septum; (g.) cross section of strand of connective tissue. Order Camarodonta Families Strongylocentrotidae, , Temnopleuridae, and Eclii- nidae. The seven members of these families that have been studied (Strongylo- centrotits purpuratits, S. drobachicnsis, Allocentrotus fragilis, Lytechinus varia- gatus, Tripncustes gratilla, Sahnacia , and Echinus affinis} have virtually identical morphology and will be treated together. In all seven species, there are two pores through the body wall for each tube foot. A septum, continuous with the wall separating the two pores of the test, runs halfway up the center of the podium (Fig. 2). In a cross section of the podium (Figs. 2B, 3A), it can be seen that the septum is continuous with a layer of tissue in the wall of the tube foot. The septum is continuous with the inner of the three adjacent layers of connective tissue in the wall of the podium (Fig. 3A). Each layer is made up of strands 2-6 microns in diameter. The inner and outer layers run circularly while those in the middle layer are longitudinal 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 repo
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
