Department of Anatomy and Embryology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt.
Department of Cytology and Histology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt.
Microsc Res Tech. 2021 Jul;84(7):1586-1595. doi: 10.1002/jemt.23719. Epub 2021 Feb 1.
The current study was designed to describe the prenatal developmental stages of the rabbit tongue. Thirty-five embryos of prenatal ages (E16, E19, E23, E25, E28, and Postnatal) were obtained from New Zealand white (NZW) rabbit. The primordia of the tongue were observed on the foundation as early as day 16 prenatal age (E16). The first primordia of lingual papillae were observed that including the primordia of circumvallate papillae at day 19 prenatal (E19). Thickenings of lingual epithelium developed at 19 day prenatal of embryo. At day 23-25 pc, the presence of primordia of foliate papillae was shown in addition to primordia of the fungiform and filiform papillae were found. The development of the final shape of the tongue is a longstanding process that occurs during the prenatal and postnatal life. The first primordia of gustatory papillae appear, and only later primordia of mechanical papillae are formed. In conclusion, the morphogenesis of the tongue and its lingual papillae discussed its herbivorous nature of feeding.
本研究旨在描述兔舌的产前发育阶段。从新西兰白兔（NZW）获得 35 个产前胚胎（E16、E19、E23、E25、E28 和产后）。舌的原基早在第 16 天（E16）就出现了。第 19 天（E19）出现了包括轮廓乳头原基在内的第 1 个舌乳头原基。胚胎 19 天出现了舌上皮增厚。在 23-25 天，除了发现菌状和丝状乳头原基外，还显示了叶状乳头原基的存在。舌的最终形状的发育是一个长期的过程，发生在产前和产后。味觉乳头的第 1 个原基出现，只有后来才形成机械乳头的原基。总之，舌及其舌乳头的形态发生讨论了其食草的进食特性。
