Histomorphology and histochemical study of the swell body of the nasal cavity in the local Iraqi goat, Caprus hircu

The nasal cavity is divided into many nasal passages by the nasal septum and nasal turbinates. These structures are lined by the heavy vascular mucosal membrane, which establishes many important functions such as filtering, humidification, and warming of the inspired air. The present study was conducted to investigate the characteristic features of the nasal swell body morphologically, histologically and radiologically of adult healthy goats. Fifteen goats’ heads were collected from adult healthy goats from slaughterhouses immediately after slaughter. For histology, the prepared section are stained by Hematoxylin and eosin stain and for histochemistry PAS-Alcian blue was used. Based on the gross anatomical and X-Ray examination, the nasal swell body (NSB) was fusiform-shaped, projected bilaterally from the nasal septum. It was extended in parallel with the ventral concha between the dorsal and ventral concha, and the width of body was 32.4mm. The height was 45.6mm and the length was 3.25cm. The NSB was 2.2cm of the nasal floor. The NSB was consisted of the nasal septum hyaline cartilage covered from lateral sides with connective tissue rich with blood vessels and glands. The lining epithelium was of pseudostratified columnar type (respiratory) with Alcian Blue positives goblet cells.