Fig. 6 in Morphological analysis of the oviduct, oviducal gland and isthmus of the blue shark Prionace glauca (Linnaeus, 1758) (Elasmobranchii: Carcharhiniformes)

Fig. 6. Micrographs of the Terminal zone of Prionace glauca. (A): Terminal zone (T) transiting the zone Baffle (B) and the isthmus (Is); central lumen (L) and muscle tissue (mt) of GO. SEM. (B): region of the central lumen (L) of the GO, the deeper, opening parallel and slanted. SEM. (C): region contact the central lumen (L), coating epithelium does not form projections; tubules are elongated and rounded; Isthmus (Is). HE. (D): region facing the transition zone of GO, invaginations in the coating epithelium and connective tissue (ct) and projections (pr) in the lining of the GO; tubule lumen (tl). HE. (E e F): tubules are simple ciliated columnar epithelium consisting of (c) with glandular cells, the presence of a few sperm (sp) found in the lumen of the tubule. HE. (G): central lumen (L); tubule lumen (tl); connective tissue (ct). PS. (H): central lumen (L); tubule lumen (tl); connective tissue (ct). Type I collagen fibers. PS polarized. Scale bars: 1 mm (C); 500 µm (D); 300 µm (A); 100 µm (B); 50 µm (E); 10 µm (F).