[Embryological development of the chick tongue]
Revista De La Facultad De Odontologia
|January 1, 1989
Summary
Chick tongue development reveals lingual glands secrete mucins starting at 15 days. Anterior epithelium cornification is genetically determined, not diet-driven.
Area of Science:
- Developmental biology
- Histology
- Embryology
Context:
- Studies on chick embryonic development are crucial for understanding vertebrate organogenesis.
- Histomorphological changes during embryonic development provide insights into tissue differentiation and function.
Purpose:
- To investigate the histomorphological changes in chick tongue development from 7 to 19 days.
- To identify the onset of lingual gland secretion and epithelial cornification during embryonic development.
Summary:
- Histological and ultrastructural analyses of chick tongues (7-19 days) revealed developmental changes.
- Glandular buds appeared at 11 days, with significant epithelial thickening and papillae formation by 15 days.
- Lingual glands began secreting mucins at 15 days, evidenced by cytochemical staining and ultrastructural analysis.
- By 19 days, the anterior epithelium showed cornification, indicating a genetically programmed event.
Impact:
- This study demonstrates that chick lingual glands initiate mucin secretion during embryonic development.
- The findings suggest that anterior tongue epithelium cornification is genetically programmed, independent of feeding adaptations.
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