lecture 14 Early Chick Development

lecture 14 Early Chick Development - Early Development in...

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1 Early Development in Birds I. Cleavage II. Gastrulation II Axis Formation
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2 The chick egg has discoidal meroblastic cleavage
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3 Development occurs in the chick blastodisc on top of the yoke
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4 Formation of the two-layer blastoderm of the chick II. Gastrulation
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5 Formation of the two-layer blastoderm of the chick II. Gastrulation
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6 Green= form Hensen’s node Red=form posterior of primative streak II. Gastrulation Formation of Hensen’s node from the Koller’s sickle
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7 Regression of the primitive streak, leaving the notochord in its wake
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8 Cell movements of the primitive streak in the chick embryo
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9 Cell movements of the primitive streak in the chick embryo
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10 Cell movements of the primitive streak in the chick embryo http://anatomy.med.unsw.edu.au/CBL/Embryo/Movies/larsen/gast.mov
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11 Migration of endodermal and mesodermal cells through the primitive streak
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This is a top view of the chick blastodisc showing the general movement of the epiblast cells towards the primitive streak. The mesoderm cells involute over the edges of the primitive
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This note was uploaded on 11/26/2011 for the course BIO 361 taught by Professor Dr.bjgrubb during the Fall '10 term at N.C. A&T.

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lecture 14 Early Chick Development - Early Development in...

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