. A junior course of practical zoology. Zoology. CIECULATOKY SYSTEM 123 1. The arterial system. From the ventricle arises a single large vessel, the aorta. This gives off almost at once a large visceral artery, which runs along the upper surface of the liver to the top of the spire, supplying both lobes of the Uver, the intestine, and the reproductive organs. The aorta itself runs forwards along the right side of the crop, between it and the common Pio. 31.—Helix pomatia. Section taken along the axis of the shell, and transversely to the foot. The sheU is represented by the thick black


. A junior course of practical zoology. Zoology. CIECULATOKY SYSTEM 123 1. The arterial system. From the ventricle arises a single large vessel, the aorta. This gives off almost at once a large visceral artery, which runs along the upper surface of the liver to the top of the spire, supplying both lobes of the Uver, the intestine, and the reproductive organs. The aorta itself runs forwards along the right side of the crop, between it and the common Pio. 31.—Helix pomatia. Section taken along the axis of the shell, and transversely to the foot. The sheU is represented by the thick black line. (a. m. m.) A, tunbilicus. AG, albumen gland. S, nucleus of shell, C, crop. J}, common duct. E, flagellum. F. foot. G» pulmonary sinus. HG, herm- aphrodite gland. I, intestine. K, tidney. LIi, left lobe of Uver. MC, pulmonary or mantle^^Tity. DAG, mucous glands. P. pedal gland. PC, pericardifd cayity, PS, pedal sinus. PV, pulmonary vessels. R, rectum. KL, right lobe of liver. BM, retractor muscles. S, spermatheca. SG, sali- vary gland, U, ureter. V, 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 Marshall, A. Milnes (Arthur Milnes), 1852-1893; Hurst, C. Herbert (Charles Herbert), 1856?-1898, joint author. London, Smith, Elder


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1888