Morphogenesis Overview
Transcript of Morphogenesis Overview
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Morphogenesis Overview
Biology 4361
July 2009
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Chick Embryonic Development
Stage
© Prof. Judy Cebra-Thomas, Swarthmore College
23-26 h 26 h 26-29 h 29-33 h
Head fold
Hensen’snode
Primitive
streak
Somites
Anterior
neuroporeNeural tube
7-somite
stage
Area pellucida
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Chick Embryonic Development
Stage
© Prof. Judy Cebra-Thomas, Swarthmore College
33-38 h 40-45 h 45-49 h 48-52 h
Forebrain
Midbrain
Hindbrain
Heart
10-somite
stage
Rhombomeres
Blood
islands
Posterior neuropore
Ventricle
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Chick Embryonic Development
Stage
© Prof. Judy Cebra-Thomas, Swarthmore College
50-53 h 55+ h 56+ h 52-64 h
Vitelline
veins,
arteries
Limb
bud
Spinal cord
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Chick Embryonic Development
Stage
© Prof. Judy Cebra-Thomas, Swarthmore College
64+ h 72 h 3-3.5 d 3.5 d
Limb buds
Pharyngeal
pouches
Allantois
Amnion
Ventricle
Atrium
EyeOtic
vesicle
Olfactory
placode
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Pharyngeal Arches
Human embryo 31 d
Pharyngeal arches
(branchial arches)
Pharyngeal
pouch
PZ Myers
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Cross Sections
Posterior
Anterior
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Gastrulation and Neurulation
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Neurula
Neural tube
Endoderm
Notochord
Coelom
Mesoderm
paraxial
intermediate
lateral plate
Primitive
gut
SomiteEpidermis
Heart primordiaYolk
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Chick and Frog Embryos
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Organogenesis
Neural tubeSomiteEpidermisNotochord
AortaGlomusPronephros
CoelomGut
early
kidney