Postembryonic development of the Drosophila stomatogastric nervous Group of mesoderm cells that converge during dorsal closure above the tip of The corpus allatum seems to originate from a bilateral TheĬorpora cardiaca (ventral part of ring gland) probably derive from theĮsophagus primordium. The different components of the ring gland are of diverse origin. Glands (produce ecdysone see Riddiford, this volume), and the corporaĬardiaca. Poulson 1950): the corpus allatum (produces juvenile hormone), the thoracic Structure that includes three different endocrine organs (Bodenstein 1950 The anterior tip of the dorsal vessel ( dv). Neurons of the frontal ganglion projectĪxons to the brain and to the pharynx musculature ( frontal nerve, fn).Īxons of the hypocerebral ganglion send their axons to the frontal ganglion At stage 17, many neurons of the stomatogastric nervous system Rise to at least two different neural structures: the hypocerebral ganglion ( hcg) and a group of neurons that migrate along the esophagus and proventriculus ( pv) and might correspond to the ventricular ganglion ( vgl) of Which in Drosophila is a paired structure attached to the anterior (Campos-Ortega and Hartenstein 1985) and end up as the frontal ganglion ( fg), Primordia of the stomatogastric nervous system lose their epithelial characteristics.Ĭells that were included in the anterior-most pocket migrate anteriorly During stage 13, these pockets pinch off the esophagus epithelium andįorm closed vesicles with an inner lumen up until stage 14, they stay inĬontact with the esophagus and move posteriorly. Nervous system ( stp) evaginate as three unpaired, linearlyĪrranged pockets from the roof of the esophagus primordium ( es Poulsonġ950). Stomatogastric Nervous System and Ring Gland pages 16-17ĭuring early stage 12, the primordia of the stomatogastric
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |