. Text book of zoology. Zoology. Fig. 73. Collar cells of aSponge. fc Fig. 74. Various forms of Sponges; diagrammatic longitudinal sections, o osculum, p pores.—Orig. saccular evaginations of the exhalent canal (Fig. 74 B). The lining of collar cells is limited to these chambers, whilst the main cavity is lined by a flat epithelium; the inhalent canals open into the- evaginations. In others (Fig. 74 C, the left side of the figure), the evaginations are, again, provided with smaller pouches, and in these alone, collar cells are found; they are, therefore, termed the flagellate chambers
. Text book of zoology. Zoology. Fig. 73. Collar cells of aSponge. fc Fig. 74. Various forms of Sponges; diagrammatic longitudinal sections, o osculum, p pores.—Orig. saccular evaginations of the exhalent canal (Fig. 74 B). The lining of collar cells is limited to these chambers, whilst the main cavity is lined by a flat epithelium; the inhalent canals open into the- evaginations. In others (Fig. 74 C, the left side of the figure), the evaginations are, again, provided with smaller pouches, and in these alone, collar cells are found; they are, therefore, termed the flagellate chambers; they communicate with the exterior by branching inhalent canals. Finally, the chambers may be racemose, that is, they may be connected with the main branches by longer or shorter stalks (Fig. 74 C, the right side of the figure). In all cases,.. 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 Boas, J. E. V. (Johan Erik Vesti), 1855-1935; Boas, J. E. V. (Johan Erik Vesti), 1855-1935. Lehrbuch der Zoologie. London, Sampson Low, Marston
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1896
