Biotechnology Research Center, Suez Canal University, Ismailia, Egypt.
Cells Tissues Organs. 2010;191(2):161-5. doi: 10.1159/000223231. Epub 2009 Jun 1.
Tongue specimens were collected from 18 healthy adult Egyptian geese (Alopochen aegyptiacus) of both sexes. We measured and analyzed the whole, anterior, middle and posterior length and width of the tongue parts. The dorsal mucosal surface of each tongue was investigated by SEM. The length of whole tongue, widths at anterior and middle ends of its root showed significant differences between sexes. By gross morphology, the tongue showed 3 parts (anterior, middle and posterior). The anterior part represented 1 half of the tongue, while the 2 remaining parts comprised the other half. A clear median longitudinal groove was observed macroscopically along the forward half of the anterior region. The caudal part of the body had a central circular depression in front of giant conical papillae arranged in transverse row. On both sides of the tongue, cylindrical lingual papillae were compactly distributed and divided into anterior and posterior groups which increased in size and decreased in number caudally. By SEM, both giant conical and large cylindrical lingual papillae were lined with extensively modified mucosal surfaces that appeared as finger-like projections with scales. The tongue, which plays an important role in food intake in Egyptian geese, exhibited significant morphological variations in dorsal mucosal lining between sexes. Morphological observations recorded significant gender differences in total length and widths of the tongue at anterior and middle segments of its root.
从 18 只健康的成年埃及鹅（Alopochen aegyptiacus）中采集了舌标本。我们测量并分析了舌的全长、前、中、后长度和宽度。通过 SEM 研究了每个舌的背侧黏膜表面。整个舌的长度、根部前、中末端的宽度在性别之间存在显著差异。从大体形态上看，舌可分为 3 部分（前、中、后）。前部分代表舌的一半，而其余两部分则占另一半。在前部区域的前半部分可以观察到一个明显的正中纵向沟。身体的尾部在巨锥形乳头前面有一个中央圆形凹陷，这些乳头呈横向排列。在舌的两侧，圆柱形舌乳头紧密分布，并分为前、后两组，从尾端开始，大小增加，数量减少。通过 SEM，巨型锥形和大型圆柱形舌乳头均排列着广泛修饰的黏膜表面，呈现出指状突起和鳞片。在埃及鹅中，舌在摄取食物方面起着重要作用，其背侧黏膜衬里在性别之间表现出显著的形态变化。形态学观察记录了整个舌和根部前、中节的长度和宽度在性别之间存在显著差异。
