FIGURE 7 in Contribution to the morphological description of the marine leech, Ozobranchus margoi (Apáthy) (Rhynchobdellida: Ozobranchidae) by using combined histology, micro-CT and SEM

FIGURE 7. Section images of O. margoi using the micro-CT technology. A, antero-coronal section in 3D volume rendering of the dorsal part of the leech, showing the glands (gl) with the gland duct (gd) and the oesophagus (oe). Five pairs of blind sacs (bs) begins on both sides of the posterior crop (pc). B, transversal section with the ganglionic mass (gm) overcome by a glandlike structure (gls) and surrounding the proboscis (pr). C, transversal section on the oviducal bridge (ob) with the two ovaries arching ventrally and separating the anterior (ac) and posterior crop (pc). D, antero-coronal section of the leech showing the oesophagus (oe) and four pairs of testis (T) connected (cn) in two points with the body cavity. On both lateral sides there are five pairs of external gills (g). E, coronal section of the whole body showing the posterior crop (pc), a pair of testes (t) tied to the celomic cavity with two connections (cn), two lateral post ceca (pca) and three of the four central sacs of the posterior intestine. F, transversal section of the not branchiate segment of the urosome showing two ventrally located lateral post ceca (pca), one central expanded posterior intestine (pi) and a dorsally directed lateral diverticula (ld). G, transversal section in proximity of the posterior sucker (ps) showing the posterior intestine (pi) ending in a dorsal anus (da). Scale bar = 1mm.