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[Human lingual organogenesis: histochemical and ultrastructural aspects]
M E Samar1, M E de Ferraris, R E Avila
1Fac. de Odontología. UNC. Córdoba, República Argentina.
Anales De La Facultad De Odontologia
|December 1, 1990
Summary
This study tracked human fetal tongue development from 8 to 32 weeks, revealing synchronized growth of its histological components during organogenesis. Key findings include the differentiation of papillae, glands, and muscle tissues, highlighting a consistent developmental rhythm.
Area of Science:
- Developmental Biology
- Histology
- Human Embryology
Context:
- The development of the human fetal tongue involves complex organogenesis.
- Understanding the timeline of histological differentiation is crucial for developmental studies.
Purpose:
- To investigate the chronological sequence of histological and ultrastructural changes in the developing human fetal tongue.
- To correlate the differentiation of various tissue components during human tongue organogenesis.
Summary:
- Structural, ultrastructural, and histochemical analyses were performed on human fetal tongues (8-32 weeks).
- Epithelial stratification, papillae formation (rudimentary at 8 weeks, fungiform at 12 weeks), and glycoprotein deposition in the basement layer were observed.
- Myoblast differentiation occurred by 20 weeks, alongside the maturation of glandular structures with specific secretory products.
Impact:
- Provides a detailed timeline for human fetal tongue histogenesis.
- Demonstrates a coordinated differentiation and growth rhythm among different tissues.
- Offers insights into the developmental processes of oral structures.