Nasal Cavity of Green Sea Turtles Contains 3 Independent Sensory Epithelia
| Autor: | Raito Itakura, Masashi Yanagawa, Chiyo Kitayama, Satomi Kondo, Tadatoshi Satow, Yohei Yamaguchi, Chihiro Suzuki, Yusuke K. Kawai, Atsuru Fujimoto, Daisuke Kondoh, Takayuki Sato |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Olfactory system Nasal cavity Vomeronasal organ 040301 veterinary sciences Physiology Connective tissue olfactory system Biology Epithelium 0403 veterinary science Sensory epithelia histology odorant receptor 03 medical and health sciences Behavioral Neuroscience Olfactory nerve Physiology (medical) medicine Animals Diverticulum (mollusc) computed tomography 04 agricultural and veterinary sciences Anatomy biology.organism_classification Sensory Systems Turtles reptile Nasal Mucosa 030104 developmental biology Sea turtle medicine.anatomical_structure Odorants vomeronasal organ Nasal Cavity |
| Zdroj: | Chemical senses. 44(7):427-434 |
| ISSN: | 1464-3553 |
| Popis: | application/pdf The morphological and histological features of the nasal cavity are diverse among animal species, and the nasal cavities of terrestrial and semiaquatic turtles possess 2 regions lined with each different type of sensory epithelium. Sea turtles can inhale both of volatile and water-soluble odorants with high sensitivity, but details of the architectural features and the distribution of the sensory epithelia within the sea turtle nasal cavity remain uncertain. The present study analyzed the nasal cavity of green sea turtles using morphological, computed tomographic, and histological methods. We found that the middle region of the sea turtle nasal cavity is divided into anterodorsal, anteroventral, and posterodorsal diverticula and a posteroventral excavation by connective tissue containing cartilages. The posterodorsal diverticulum was lined with a thin sensory epithelium, and the anterodorsal and anteroventral diverticula were occupied by a single thick sensory epithelium. In addition, a relatively small area on the posteroventral excavation was covered by independent sensory epithelium that differed from other 2 types of epithelia, and a single thin bundle derived from the posteroventral excavation comprised the most medial nerve that joins the anterior end of the olfactory nerve tract. These findings suggested that the posteroventral excavation identified herein transfers stimuli through an independent circuit and plays different roles when odorants arise from other nasal regions. |
| Databáze: | OpenAIRE |
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