. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 344 THE UlUNO-GENITAL SYSTEM, THE ADL'ENALS, ETC. Fig. 224. B. The female reproductive organs. The position of these organs has ah-eady been given (p. $^5)- I. The ovaries. a. General description. Each sac-Hke ovary (Fig-. 224) is subdivided by thin- walled septa into numerous complete chambers, to the inner walls of which the ova are attached. The walls of adjacent sacs are intimately attached to each other, and the subdivision corresponds with the ex- ternal lobulated appearance of the organ. According to Spengel the number
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 344 THE UlUNO-GENITAL SYSTEM, THE ADL'ENALS, ETC. Fig. 224. B. The female reproductive organs. The position of these organs has ah-eady been given (p. $^5)- I. The ovaries. a. General description. Each sac-Hke ovary (Fig-. 224) is subdivided by thin- walled septa into numerous complete chambers, to the inner walls of which the ova are attached. The walls of adjacent sacs are intimately attached to each other, and the subdivision corresponds with the ex- ternal lobulated appearance of the organ. According to Spengel the number of lobules is about fifteen (Rathke nine to thirteen, Brandt nine). Whether this segmentation of the ovary corresponds with the segmentation of the body has not been determined (Spengel). No part corre- sponding with Bidder's organ has been found in J^aua esculenta. During the breeding season the ovaries undergo an extraordinary increase in size so as to occupy the greater part of the body- cavity and to displace the other viscera. The ovaries are entirely surrounded by peritoneum. b. Minute structure. [The layer of peritoneum covering the ovary possesses cilia (Thiry), the ciliated cells being arranged in isolated patches (Schweigger-Seidel,AValdeyer) on the ventral surface of the organ, and on the mesovarium ; these patches are some-. The reproductive organs ; the ovary of the right side has been removed. y Kidney. '. Opening of the oviduct into pieuro-iJeritoneal cavity. Ov Oviduct. Ova Ovary. P Opening of oviduct into the cloaca. jS, .51 Openings of the ureters. Vt Dilated liinder portion of the oviduct. t Groove in which ureters lie. * Fold in groove separating the oiieninL's 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 Ecker, Alexander, 1816-1887; Haslam, George. Oxford,
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