440
8 Morphogenesis
Fig. 8.24 Types of inversion in Volvox. From Hohn and Hallmann (2011)
8.5 Early Heart Development
Because of its accessibility and many similarities to developing human embryos, the
chick embryo has been a popular experimental model for studies of organogenesis.
Unless noted otherwise, all computational models presented in this chapter for organ
morphogenesis are based on studies in chickens. 10 The blastula wall, or blastoderm,
is a relatively flat, disk-shaped group of cells lying on the surface of the yolk beneath
the vitelline membrane. Post-gastrulation, ectoderm forms the outer layer of the
blastoderm, with mesoderm and endoderm below (Fig. 1.2c). Part of the ectoderm
thickens and becomes the neural plate (NP).
10 Hamburger and Hamilton (1951) divided the 21-day incubation period of the chick embryo into
46 stages (Table 8.1). In this chapter, HHx denotes Hamburger–Hamilton stage x.
8 Morphogenesis
Fig. 8.24 Types of inversion in Volvox. From Hohn and Hallmann (2011)
8.5 Early Heart Development
Because of its accessibility and many similarities to developing human embryos, the
chick embryo has been a popular experimental model for studies of organogenesis.
Unless noted otherwise, all computational models presented in this chapter for organ
morphogenesis are based on studies in chickens. 10 The blastula wall, or blastoderm,
is a relatively flat, disk-shaped group of cells lying on the surface of the yolk beneath
the vitelline membrane. Post-gastrulation, ectoderm forms the outer layer of the
blastoderm, with mesoderm and endoderm below (Fig. 1.2c). Part of the ectoderm
thickens and becomes the neural plate (NP).
10 Hamburger and Hamilton (1951) divided the 21-day incubation period of the chick embryo into
46 stages (Table 8.1). In this chapter, HHx denotes Hamburger–Hamilton stage x.