DEVELOPMENTAL BIOLOGY

DEVELOPMENTAL BIOLOGY
HUMAN EARLY DEVELOPMENT
HUMAN EARLY DEVELOPMENT
HUMAN EARLY DEVELOPMENT

1. AN OVERVIEW OF HUMAN EARLY EMBRYOGENESIS

2. CLEAVAGE

3. BLASTOCYST, IMPLANTATION

4. GASTRULATION : Formation of the Primary Germ Layers,

5. NEURULATION : Making the Neural Tube
Notochord Axis
1. AN OVERVIEW OF HUMAN EARLY EMBRYOGENESIS
AN OVERVIEW OF HUMAN EARLY EMBRYOGENESIS
http://en.wikipedia.org/wiki/Human_embryogenesis
AN OVERVIEW OF HUMAN EARLY EMBRYOGENESIS
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AN OVERVIEW OF HUMAN EARLY EMBRYOGENESIS
2. CLEAVAGE
CLEAVAGE
Cleavage: Functions Events

Initial divisions of zygote to form the multicellular embryo

During cleavage the cells are called Blastomeres

They are rapid cell divisions with no intervening growth (G1 G2) phases

Cells become smaller with time

Holoblastic Cleavage: cells are completely separate
Mitotic vs. Normal Cell Cycle
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[pptx/pdf]DEVELOPMENTAL BIOLOGY