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Morphological and Histological study of olfactory organs in Clemmys caspica caspica | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 6, Issue 2, 2006, Pages 1-11 PDF (0 K) | ||
| Author | ||
| Layla Mohsen Mahdi | ||
| Abstract | ||
| Summary The Present study aims at recognizing the morphological description and Histological structure of the olfactory organs in Clemmys caspica caspica , Olfactory sacs lie on the back surface of the head and it opens in to the outside with a pair of external nostril apertures , which have oval shape , and it opens in to the inside of the nasal cavity with a pair of internal nasal apertures . Olfactory sacs begin with the vestibulum which a tubular structure lined with stratified squamous epithelium tissue similar to the skin then nasal cavity which extends from the vestibulum to the duct nasopharyngeus and it lines with olfactory epithelium simple columnar epithelia, and a vomeronasal epithelium . Olfactory epithelium consists of Pseudostratified columnar epithelium tissue containing three types of cells ( receptor , Supporting , basal ). Olfactory epithelium is provided with a number of Bowman's glands and the columnar epithelium consists of three types of cells ( ciliated - goblet - basal ) . As for Vomeronasal epithelia, it consists of Pseudostratfied epithelium tissue which consists of three types of cells ( receptor , supporting , basal ) . Receptor cells are provided with microvilli instead of cilia , the last part of cavities is represented by the duct nasopharyngens and it lies between the nasal cavity and the internal nasal apertures and it is lined with simple columnar epithelia similar to simple columnar epithelium in main nasal cavity . | ||
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