1. Esophagus
2. Heart
3. Liver
4. Mesonephros
5. Midgut loop
6. Notochord
7. Pericardial cavity
8. Rathke's pouch
9. Rhombencephalon
10. Sclerotome
11. Spinal cord
12. Spinal ganglion
13. Spinal nerve
14. Telencephalon
15. Tongue
16. Tracheobronchial diverticulum
17. Umbilical cord
18. Ureteric bud

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