. Annals of tropical medicine and parasitology. Parasites. 140 Receptacuhivi and vagina. The vagina is a long, muscular, sinuous tube; the terminal portion lying posterior to the whole length of the cirrus pouch is often, but not always, dilated. Its extreme lateral extremity lies at the base of a well pronounced sinus, situated immediately posterior to the cirrus pouch; a well developed sphincter muscle surrounds the opening of the vaginal sinus. Slightly anterior to the ovary the vagina dilates into a small but somewhat elongated receptaculum (figs. 3 and 4).. vev V Fig. 4. Dava'inea juhrman
. Annals of tropical medicine and parasitology. Parasites. 140 Receptacuhivi and vagina. The vagina is a long, muscular, sinuous tube; the terminal portion lying posterior to the whole length of the cirrus pouch is often, but not always, dilated. Its extreme lateral extremity lies at the base of a well pronounced sinus, situated immediately posterior to the cirrus pouch; a well developed sphincter muscle surrounds the opening of the vaginal sinus. Slightly anterior to the ovary the vagina dilates into a small but somewhat elongated receptaculum (figs. 3 and 4).. vev V Fig. 4. Dava'inea juhrmanni, Transverse section showing male and female genitalia, etc. —cirrus pouch; —longitudinal muscle ; n.—nerve ; o.—ovary; —prostatic gland; —receptaculum seminis; 5.—spines on cirrus; t,—testes; ,—transverse muscle; «.—uterus; o.—vagina; —vas deferens; —ventral excretory vessel; —vitcMine gland. X about i6o. Vitelline glands. This lies posterior to the ovary, and is easily seen. In size it is almost equal to one wing of the ovary (figs. 3 and 4). Uterus. The uterus is first visible as a small, irregular cavity, situated immediately anterior to the vitelline gland. It enlarges rapidly, eventually filling the entire segment between the water vessels. The eggs, when first seen, appear as a dense granular mass filling the uterus. A few segments further back about forty capsules are differentiated, each containing six or seven, and rarely nine to eleven, oncospheres. At first the mature uterus lies strictly within the water vessels, but in the last five or six segments, the water vessels disappear and the entire segment is occupied by the capsules. 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 Liverpool School of Tropical Medicine. Liverpool Un
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectparasites, bookyear19
