Prenatal Development of the Upper Respiratory Tract of the Camel Camelus Dromedaries

The current work was carried out 011 65 camel embrvosand foetusesrangmg from ID to 1100 mm CV{{Lr[ LW specunens were tixed and treated with normal histologlC’;’!!technique. from this study the findings were observer! ano concluded as follows: 1 - The primitive cavum nasi and lateral nasal wall \Xlereobserved at 12 mm CVRL and comrnurucated treerv wuh ora!cavity through the primitive choana. The anlage of the nasalconchae were detected at 17 mm CVRL . The nasal capsulewas traced at 20 mm CVRL . The rostra! nares were nccJuderjwith nasal plug at 23 mm CVRL till 160 m m CVRL Inepalatogenesis was completed at 35 m m CVRL. The cenier sof ossification were observed in lateral nasal wan at 3U m 111CVRL The submucosal glandular buds were evident at thpvestibular region and also the future sinus rnaxrllarrs wasobserved at 90 m m CVRL. The pr irnrtive dorsal and ventralI spiral lamellae of the ventral nasal concha appeared at I)mm CVRL and were easily detected at 140 m m CVRL . rile ossified tissue took its place from the basal plate 01 1111:’ ventral nasal concha . The ventral sprral lamella wascompletely ossified at 650 mm CVRL , followed by the dor sa:spiral lamella at 750 mm CVRL. The vestibular pan (It tile