Head and neck Back

Pharyngeal apparatus




1. 1st pharyngeal pouch
2. 2nd pharyngeal arch
3. 4th ventricle
4. Lateral nasal process
5. Maxillary swelling
6. Mandibular swelling
7. Medial nasal process
8. Nasal pit
9. Optic cup
10. Otic vesicle
11. Rhombencephalon
12. Trigeminal ganglion
13. Telencephalic vesicle

Technique: Paraffin section
Staining: Hematoxylin-eosin Orientation: Longitudinal section Developmental age: 5 weeks Magnification (objective): x 10