. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 464 PAUL S. GALTSOFF The genital canals persist throughout the year and constitute the primary gonacls, which, by the growth of their inner walls and a series of cvaginations, give rise to the tubular secondary follicles. In transection the lumen of the genital canal appears as a narrow space between a thin body wall, consisting of a layer of connective tissue covered with epi- thelium, and a dense mass of ovarian or tcsticular follicles. The por- tion of the lumen adjacent to the body wall is lined with a ciliated epitheliu
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 464 PAUL S. GALTSOFF The genital canals persist throughout the year and constitute the primary gonacls, which, by the growth of their inner walls and a series of cvaginations, give rise to the tubular secondary follicles. In transection the lumen of the genital canal appears as a narrow space between a thin body wall, consisting of a layer of connective tissue covered with epi- thelium, and a dense mass of ovarian or tcsticular follicles. The por- tion of the lumen adjacent to the body wall is lined with a ciliated epithelium while its side, , the inner arch of the lumen, is CE ^*k \ M •-.'--• - |*^vJV3g&, . r* : tf -•'••• K. Vic,. 2. Ostrca cdidis. transxersc section of the right urinogenital cleft and oviduct preserved during o\ illation. Camera lucida drawing X 150. Hsematein- eosin. /.'. hlood cells; CE, ciliated epithelium; CT, connective tissue; F, connective ti-Mic lihres; (,'. oviduct; M, muscle fibres; MC, mucous cells; R, ridge of ciliated liarating the oviduct from the urinogenital cleft; SB, suprabranchial cham- (), ripe eggs discharged from ovary; U, urinogenital cleft. lined with germinal epithelium. Scattered muscle fibres are found here and there in the cnmiectivc tissue of the gonad but are slightly more abundant in the body wall exterior to the genital canals. In both sexes the canaK cnnvergc on each side of the gonad into a very short gonoduct (oviduct or >]>ermidurt) through which the sperm or ova are discharged into a urino< cleft (UGC). In an adult oyster about 4 inches long, bv the author, the oviducts did not exceed mm. in length while the spermiducts were about mm. long. When the. 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 Bi
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
