Fig. 1
From: Functional morphological study on the tongue of the adult Egyptian geese (Alopochen egyptiacus)
Photographs (A-C) showing the different morphological structures of the geese’s tongue. Note, apex (a), body (b), lingual prominence (lp), transverse row of lingual papillae (red arrow head), root (r), two mucosal elevations of the root (black arrow), the rostral group of papillae (small red quadrangular), caudal group of papillae (large red quadrangular), 3–4 papillae representing the caudal continuation of the caudal group papillae ( dotted blue quadrangular), median lingual groove (green star), lateral sided papillae of the root (blue two sided arrow), ventral mucosal projections (green arrow), lingual nail (blue star), area of oral floor free of tongue (yellow star) and the frenulum linguae (red star)