TY - JOUR JF - Acarologia T1 - Fine structure of the synganglion of Ornithodoros (Pavlovskyella) erraticus (Ixodoidea, Argasidae) VL - 27 IS - 4 SP - 295 EP - 302 PY - 1986 SN - 0044-586X SN - 2107-7207 PB - Les Amis d'Acarologia AU - El-Shoura, S.M. UR - https://www1.montpellier.inrae.fr/CBGP/acarologia/article.php?id=2621 DA - 1986-12-23 KW - Ornithodoros AB - The fused synganglionic mass in the unfed Ornithodoros (Pavlovskyella) erraticus female is enclosed within a sinus of the circulatory system and consists of a neural lamelia surrounding an outer cortex and an inner neuropile containing the oesophageal canal. The neural lamelia consists of alternating layers of finely granular material containing collagenous-like fibers and may function to provide support to underlying tissues, resist positive hydrostatic pressure and allow permeability to nutrients and ionie exchange. Immediately below the neural lamelia is a perineural layer of glial cells. The remainder of the cortex comprises two types of neurosecretory cel! bodies, globuli cells and glial cells, and one type of non-neurosecretory cell. The glial cells are structurally related to the transfer of trophic material. The neuropile consists of nerve fibers (axons and dendrite) surrounded by glial cells ER -