. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. REPRODUCTIVE SYSTEM OF THE FEMALE 61 ing the vascular system of the ovary (figs. 30, 32). Some of the general cells form the so-called interstitial tissue of the ovary. The germ cells differ from the general cells in that each of them has a latent potency for developing a new individual. This latent condition is con- verted into active potentiality during the differentiation of the primitive germ cell into the mature egg or ovum. 2. General Struct
. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. REPRODUCTIVE SYSTEM OF THE FEMALE 61 ing the vascular system of the ovary (figs. 30, 32). Some of the general cells form the so-called interstitial tissue of the ovary. The germ cells differ from the general cells in that each of them has a latent potency for developing a new individual. This latent condition is con- verted into active potentiality during the differentiation of the primitive germ cell into the mature egg or ovum. 2. General Structure of the Accessory Reproductive Organs The accessory reproductive structures of the female vertebrate may be separated into three general types, viz.: (1) the total absence of or the presence of a pair of short funnel-like structures which convey the eggs from the peritoneal cavity through MESOVARIUM STALK (PEDIC OP FOLLIC VASCULAR AREA OF FOLLICLE COLLAPSED EG FOLLICLE FROM WHICH EGG H BEEN OVULATE CONNECTIV E INTERSTITIAL T I RUPT URED CIC CONNECTIVE INTERSTITIAL. Fig. 31. Three-dimensional representation of the bird ovary together with the funnel portion (infundibulum) of the oviduct. Recently ovulated egg is shown in the process of engulfment by the infundibulum. Various stages of developing eggs are 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 Nelsen, Olin E. (Olin Everett), b. 1898. New York, Blakiston
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