Head and neck Back

Tongue and thyroid gland




1. Foramen cecum
2. Heart
3. Oral cavity
4. Pharyngeal epithelium
5. Thyroid primordium
6. Thyroglossal duct
7. Tongue

Technique: Paraffin section
Staining: Alcian-kernechtrot Orientation: Longitudinal section Developmental age: 5 weeks Magnification (objective): x10