Talk:Book - Comparative Embryology of the Vertebrates 3-11

From Embryology

Basic Features of VerteLrate Morphogenesis

A. Introduction

1. Purpose of this chapter

2. Definitions

a. Morphogenesis and related terms

b. Primitive, larval, and definitive body forms

1 ) Primitive body form

2) Larval body form

3) Definitive body form

3. Basic or fundamental tissues

B. Transformation of the primitive body tubes into the fundamental or basic condition of the various organ systems present in the primitive embryonic body

1. Processes involved in basic system formation

2. Fundamental similarity of early organ systems

C. Laws of von Baer

D. Contributions of the mesoderm to primitive body formation and later development

1. Types of mesodermal cells

2. Origin of the mesoderm of the head region

a. Head mesoderm derived from the anterior region of the trunk

b. Head mesoderm derived from the pre-chordal plate

c. Head mesoderm contributed by neural crest material

d. Head mesoderm originating from post-otic somites

3. Origin of the mesoderm of the tail

4. Contributions of the trunk mesoderm to the developing body

a. Early differentiation of the somites or epimere

b. Early differentiation of the mesomere (nephrotome)

c. Early differentiation and derivatives of the hypomere

1) Contributions of the hypomere (lateral plate mesoderm) to the developing pharyngeal area of the gut tube

2) Contributions of the hypomere (lateral plate mesoderm) to the formation of the gut tube and heart structures

3) Contributions of the hypomere (lateral plate mesoderm) to the external (ectodermal or epidermal) body tube

4) Contributions of the hypomere or lateral plate mesoderm to the dorsal body areas

5) Contributions of the lateral plate mesoderm to the walls of the coelomic cavity

5. Embryonic mesenchyme and its derivatives




E. Summary of later derivatives of presumptive, major, organ-forming areas of the late blastula and gastrula

1. Neural plate area (ectoderm)

2. Epidermal area (ectoderm)

3. Entodermal area

4. Notochordal area

5. Mesodermal areas

6. Germ-cell area

F. Metamerism

1. Fundamental metameric character of the trunk and tail regions of the vertebrate body

2. Metamerism and the basic morphology of the vertebrate head

G. Basic homology of the vertebrate organ systems

1. Definition

2. Basic homology of vertebrate blastulae, gastrulae, and tubulated embryos