early development stages of the chick embryo - kau hand out.pdf · early development stages of the...

Early Development

Stages of the Chick embryo

Whole mount of 16 hour chick embryo

Henson node

Primitive streak

Area pellucida

Area opaca

Embryonic region

Cross section in 16 hour chick embryo through

hensen node

Cross section in 20 hour chick embryo through

hensen node

Henson node

Henson node

ectoderm

mesoderm

endoderm

mesoderm

ectoderm

endoderm

yolk

Cross section in 22 hour chick embryo shows hensen

node

Cross section in 22 hour chick embryo shows neural

plate

Primitive streak

ectoderm

Migrating cells

Endoderm

Neural plate

endoderm

notochord

mesoderm

ectoderm

Cross section in 22 hour chick embryo shows neural

tube

Whole mount of 24 hour chick embryo

Neural tube

proamnion

Head fold

Anterior intestinal

portal

Mesodermal

somites

Primitive knot

Primitive streak

Blood islands

neuropore

Neural fold

Fore gut

notochord

Area pellucida

Area vasculosa

Area vitellina

Area

opaca

coelom

Vertical section of 24 hour chick embryo

Cross section in 24 hour chick embryo through

hensen node

Cross section in 24 hour chick embryo shows neural

fold

mesoderm

ectoderm

Area vasculosa

Primitive streak

Neural fold

Neural groove

ectoderm

notochord

somite

yolk

splanchnic

mesoderm

Somatic

mesoderm

Cross section in 24 hour chick embryo shows neural

tube

Cross section in 24 hour chick embryo through head

region

Neural tube

mesoderm

splanchnic

mesoderm

Somatic

mesoderm

Fore gut

coelom

endoderm

Head fold

Neural fold

notochord

Fore gut

proamnion

Sub cephalic pouch

endoderm

mesoderm

Whole mount of 48 hour chick embryo

mesencephalon

diencephalon

Optic vesicle

telencephalon

heart

Anterior intestinal portal

Vitelline vien

Tail bud

Head fold

Pharynx pouch

metencephalon

Pharynx

Myelencephalon

Otic vesicle

somites

Pharynx pouch

Neural tube

Tail fold

verical section of 48 hour chick embryo

telencephalon

diencephalon

mesencephalon

metencephalon

Myelencephalon

notochord

Pharynx

somites

Neural tube

heart

Tail bud

cross section of 48 hour chick embryo through eye and

pharynx pouchs

cross section of 48 hour chick embryo through heart

cross section of 48 hour chick embryo through the

anterior intestinal portal

cross section of 48 hour chick embryo through trunk

region and lateral body fold

cross section of 48 hour chick embryo through trunk

region

Whole mount of 72 hour chick embryo

cross section of 72 hour chick embryo through eye and

heart

Error

cross section of 72 hour chick embryo through

pharyngeal puoch

Whole mount of 96 hour chick embryo