Vol. 8, Issue 4, Part C (2023)

The present study was conducted on scanning electron microscopy of anterior larynx of four adult broiler chickens. The larynx exhibited an oval-shaped laryngeal cleft, centrally positioned and flanked on both sides by the laryngeal mound. The laryngeal mound differentiated into medial and lateral parts, and extended caudally as the laryngeal fissure. Additionally, the laryngeal surface had several conical papillae organized in two configurations adjacent to the fissure, i.e. the median papillary rows containing four rows of papillae placed medially, and the slightly laterally positioned transverse rows of caudally directed pharyngeal papillae, forming two rows. These papillae exhibited a rough surface due to desquamated epithelial cells. The dorsal surface of the conical papillae presented squamous epithelial cells with diverse patterns and arrangements of microplicae.