Skip to main content
Figure 3 | Frontiers in Zoology

Figure 3

From: What prevents Struthio camelus and Dromaius novaehollandiae (Palaeognathae) from choking? A novel anatomical mechanism in ratites, the linguo-laryngeal apparatus

Figure 3

The lingual pocket of the linguo-laryngeal apparatus of S. camelus . a: The lingual pocket (caudal margin indicated by arrows) reflected cranially to reveal a secondary fold (F) as well as an additional structure (dotted outline) similar in shape to the tongue root of D. novaehollandiae (only present in some specimens). Lingual papilla (*), tongue root (R), laryngeal projection (black star), mucosal covered arytenoid cartilage (Ar) and fleshy lips (L) of the glottis. b: Midline longitudinal section of the linguo-laryngeal apparatus as seen in Figure 1c. Note how the tongue root concertina’s to allow the rostral portion of the laryngeal mound to enter the lingual pocket (P). Tongue body (Tb), rostral process of the cricoid cartilage (Rp), urohyal (U), body of the basihyal (Bb) and rostral projection of the basihyal (Rb).

Back to article page

Frontiers in Zoology

ISSN: 1742-9994