. Elementary text-book of zoology [electronic resource]. Zoology. RATA. 319 both break up the continuity of the sinuses, forming a hepatic-portal and renal-portal system respectively. The chief organs now remaining in the abdominal cavity belong to the urogenital system. The excretory and repro- ductive organs of vertebrates are so intimately connected that they are usually described in this way as one system. In the male, the testes are two large pale brown organs lying in the abdominal cavity, and suspended by a dorsal mesentery towards their front end. Fig. 227.—Male Urogenital Organs of a
. Elementary text-book of zoology [electronic resource]. Zoology. RATA. 319 both break up the continuity of the sinuses, forming a hepatic-portal and renal-portal system respectively. The chief organs now remaining in the abdominal cavity belong to the urogenital system. The excretory and repro- ductive organs of vertebrates are so intimately connected that they are usually described in this way as one system. In the male, the testes are two large pale brown organs lying in the abdominal cavity, and suspended by a dorsal mesentery towards their front end. Fig. 227.—Male Urogenital Organs of a Skate. {Ad. nat.) Mesonephras (EpididymisY. Cloacal Aperture. Each testis gives off from its anterior end a long coiled tube, the vas deferens, which passes along on either side of the dorsal middle line to open posteriorly into the uro- genital sinus. Connected with its posterior end is the sperm-sac. The anterior half of the vas deferens is sur- rounded by an epididyinis and the posterior half is in close contact with the inner edge of 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 Masterman, Arthur Thomas; Parsons, John Herbert, Sir, 1868-1957, donor; S. H. Lazarus (Firm); University College, London. Library Services. Edinburgh : E. & S. Livingstone
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1901
