150 Early development,chick embryo

Chick embryo

24 hours old chick embryo

• 1 . proamnion• 3. neural folds• 4. somites• 5 . neuroporus anterior• 6 . neural tube

33 hours old chick embryo

• 1. area vasculosa• 2. blood islands• 3. somites• 4. spinal cord• 5. non-segmented

paraxial mesodermal plate

• 6. neural folds• 7. primitive streak

33 hours old chick embryo

• 8 Infundibulum• 9. Proamnion• 10. Mesencephalon• 11. Caudální oblast

subencephalické kapsy• 12. Metencephalon• 13. Neuromery v oblasti

myelencephala• 14. 5. štěrbina mezi somity• 15. Notochord pod

rozšířenou neurální brázdou

48 hours old chick embryo

• 1. stomodeum• 2. optic vesicle• 3. maxillary process• 4. notochord• 5. isthmus• 6. mandibullar process• 7. otic vesicle• 8. 2nd branchial cleft• 9. 3rd branchial cleft• 10. caudal intestinal portal

Embryo in the neurulation period

chick 2ED human 3 weeks

Chick embryo 3ED and human embryo 5th week

Chick embryo 4ED and human embryo 5th week

Developmental stages Hamburgera- Hamiltona

Neurulation – neural tube is closed somites laterally

Chick embryo, stage HH9 head region

Neurulation

Neurulation HH9trunk

Neurulation – neural groove, neural folds before fusion in midline

Chick embryop HH9 – caudal region